Merge branch 'master' into testing

50 files changed, 1970 insertions, 447 deletions

diff --git a/ext/bg/background.html b/ext/bg/background.html
index 3b37db87..194d4a45 100644
--- a/ext/bg/background.html
+++ b/ext/bg/background.html
@@ -27,6 +27,7 @@
         <script src="/bg/js/templates.js"></script>
         <script src="/bg/js/translator.js"></script>
         <script src="/bg/js/util.js"></script>
+        <script src="/mixed/js/audio.js"></script>
         <script src="/mixed/js/japanese.js"></script>
 
         <script src="/bg/js/backend.js"></script>
diff --git a/ext/bg/css/settings.css b/ext/bg/css/settings.css
index 12bbe8a8..6284058a 100644
--- a/ext/bg/css/settings.css
+++ b/ext/bg/css/settings.css
@@ -89,19 +89,24 @@
     text-align-last: center;
 }
 
-.condition-group>.condition>div:first-child {
+.condition-group>.condition>*:first-child,
+.audio-source-list>.audio-source>*:first-child {
     border-bottom-left-radius: 0;
 }
-.condition-group>.condition:nth-child(n+2)>div:first-child {
+.condition-group>.condition:nth-child(n+2)>*:first-child,
+.audio-source-list>.audio-source:nth-child(n+2)>*:first-child {
     border-top-left-radius: 0;
 }
-.condition-group>.condition:nth-child(n+2)>div:last-child>button {
+.condition-group>.condition:nth-child(n+2)>div:last-child>button,
+.audio-source-list>.audio-source:nth-child(n+2)>*:last-child>button {
     border-top-right-radius: 0;
 }
-.condition-group>.condition:nth-last-child(n+2)>div:last-child>button {
+.condition-group>.condition:nth-last-child(n+2)>div:last-child>button,
+.audio-source-list>.audio-source:nth-last-child(n+2)>*:last-child>button {
     border-bottom-right-radius: 0;
 }
-.condition-group-options>.condition-add {
+.condition-group-options>.condition-add,
+.audio-source-options>.audio-source-add {
     border-top-left-radius: 0;
     border-top-right-radius: 0;
 }
@@ -110,6 +115,19 @@
     display: none;
 }
 
+.audio-source-list {
+    counter-reset: audio-source-id;
+}
+.audio-source-list .audio-source-prefix {
+    flex: 0 0 auto;
+    width: 39px;
+    text-align: center;
+}
+.audio-source-list .audio-source-prefix:after {
+    counter-increment: audio-source-id;
+    content: counter(audio-source-id);
+}
+
 #custom-popup-css {
     width: 100%;
     min-height: 34px;
diff --git a/ext/bg/guide.html b/ext/bg/guide.html
index 7ec1d8d9..2a602f1f 100644
--- a/ext/bg/guide.html
+++ b/ext/bg/guide.html
@@ -23,7 +23,7 @@
                 <li>Click on the <em>monkey wrench</em> icon in the middle to open the options page.</li>
                 <li>Import the dictionaries you wish to use for term and Kanji searches.</li>
                 <li>Hold down <kbd>Shift</kbd> key or the middle mouse button as you move your mouse over text to display definitions.</li>
-                <li>Click on the <img src="/mixed/img/play-audio.png" alt> icon to hear the term pronounced by a native speaker.</li>
+                <li>Click on the <img src="/mixed/img/play-audio.svg" alt> icon to hear the term pronounced by a native speaker.</li>
                 <li>Click on individual Kanji in the term definition results to view additional information about those characters.</li>
             </ol>
 
diff --git a/ext/bg/js/anki.js b/ext/bg/js/anki.js
index bd4e46cd..9f851f13 100644
--- a/ext/bg/js/anki.js
+++ b/ext/bg/js/anki.js
@@ -67,14 +67,39 @@ class AnkiConnect {
         if (this.remoteVersion < this.localVersion) {
             this.remoteVersion = await this.ankiInvoke('version');
             if (this.remoteVersion < this.localVersion) {
-                throw 'Extension and plugin versions incompatible';
+                throw new Error('Extension and plugin versions incompatible');
             }
         }
     }
 
+    async findNoteIds(notes) {
+        await this.checkVersion();
+        const actions = notes.map(note => ({
+            action: 'findNotes',
+            params: {
+                query: `deck:"${AnkiConnect.escapeQuery(note.deckName)}" ${AnkiConnect.fieldsToQuery(note.fields)}`
+            }
+        }));
+        return await this.ankiInvoke('multi', {actions});
+    }
+
     ankiInvoke(action, params) {
         return requestJson(this.server, 'POST', {action, params, version: this.localVersion});
     }
+
+    static escapeQuery(text) {
+        return text.replace(/"/g, '');
+    }
+
+    static fieldsToQuery(fields) {
+        const fieldNames = Object.keys(fields);
+        if (fieldNames.length === 0) {
+            return '';
+        }
+
+        const key = fieldNames[0];
+        return `${key.toLowerCase()}:"${AnkiConnect.escapeQuery(fields[key])}"`;
+    }
 }
 
 
@@ -106,4 +131,8 @@ class AnkiNull {
     async guiBrowse(query) {
         return [];
     }
+
+    async findNoteIds(notes) {
+        return [];
+    }
 }
diff --git a/ext/bg/js/api.js b/ext/bg/js/api.js
index 222e7ffe..f768e6f9 100644
--- a/ext/bg/js/api.js
+++ b/ext/bg/js/api.js
@@ -68,7 +68,8 @@ async function apiDefinitionAdd(definition, mode, context, optionsContext) {
         await audioInject(
             definition,
             options.anki.terms.fields,
-            options.general.audioSource
+            options.audio.sources,
+            optionsContext
         );
     }
 
@@ -97,15 +98,33 @@ async function apiDefinitionsAddable(definitions, modes, optionsContext) {
             }
         }
 
-        const results = await utilBackend().anki.canAddNotes(notes);
+        const cannotAdd = [];
+        const anki = utilBackend().anki;
+        const results = await anki.canAddNotes(notes);
         for (let resultBase = 0; resultBase < results.length; resultBase += modes.length) {
             const state = {};
             for (let modeOffset = 0; modeOffset < modes.length; ++modeOffset) {
-                state[modes[modeOffset]] = results[resultBase + modeOffset];
+                const index = resultBase + modeOffset;
+                const result = results[index];
+                const info = {canAdd: result};
+                state[modes[modeOffset]] = info;
+                if (!result) {
+                    cannotAdd.push([notes[index], info]);
+                }
             }
 
             states.push(state);
         }
+
+        if (cannotAdd.length > 0) {
+            const noteIdsArray = await anki.findNoteIds(cannotAdd.map(e => e[0]));
+            for (let i = 0, ii = Math.min(cannotAdd.length, noteIdsArray.length); i < ii; ++i) {
+                const noteIds = noteIdsArray[i];
+                if (noteIds.length > 0) {
+                    cannotAdd[i][1].noteId = noteIds[0];
+                }
+            }
+        }
     } catch (e) {
         // NOP
     }
@@ -156,8 +175,8 @@ apiCommandExec.handlers = {
     }
 };
 
-async function apiAudioGetUrl(definition, source) {
-    return audioBuildUrl(definition, source);
+async function apiAudioGetUrl(definition, source, optionsContext) {
+    return audioBuildUrl(definition, source, optionsContext);
 }
 
 async function apiInjectScreenshot(definition, fields, screenshot) {
diff --git a/ext/bg/js/audio-ui.js b/ext/bg/js/audio-ui.js
new file mode 100644
index 00000000..381129ac
--- /dev/null
+++ b/ext/bg/js/audio-ui.js
@@ -0,0 +1,131 @@
+/*
+ * Copyright (C) 2019  Alex Yatskov <alex@foosoft.net>
+ * Author: Alex Yatskov <alex@foosoft.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+class AudioSourceUI {
+    static instantiateTemplate(templateSelector) {
+        const template = document.querySelector(templateSelector);
+        const content = document.importNode(template.content, true);
+        return $(content.firstChild);
+    }
+}
+
+AudioSourceUI.Container = class Container {
+    constructor(audioSources, container, addButton) {
+        this.audioSources = audioSources;
+        this.container = container;
+        this.addButton = addButton;
+        this.children = [];
+
+        this.container.empty();
+
+        for (const audioSource of toIterable(audioSources)) {
+            this.children.push(new AudioSourceUI.AudioSource(this, audioSource, this.children.length));
+        }
+
+        this.addButton.on('click', () => this.onAddAudioSource());
+    }
+
+    cleanup() {
+        for (const child of this.children) {
+            child.cleanup();
+        }
+
+        this.addButton.off('click');
+        this.container.empty();
+    }
+
+    save() {
+        // Override
+    }
+
+    remove(child) {
+        const index = this.children.indexOf(child);
+        if (index < 0) {
+            return;
+        }
+
+        child.cleanup();
+        this.children.splice(index, 1);
+        this.audioSources.splice(index, 1);
+
+        for (let i = index; i < this.children.length; ++i) {
+            this.children[i].index = i;
+        }
+    }
+
+    onAddAudioSource() {
+        const audioSource = this.getUnusedAudioSource();
+        this.audioSources.push(audioSource);
+        this.save();
+        this.children.push(new AudioSourceUI.AudioSource(this, audioSource, this.children.length));
+    }
+
+    getUnusedAudioSource() {
+        const audioSourcesAvailable = [
+            'jpod101',
+            'jpod101-alternate',
+            'jisho',
+            'custom'
+        ];
+        for (const source of audioSourcesAvailable) {
+            if (this.audioSources.indexOf(source) < 0) {
+                return source;
+            }
+        }
+        return audioSourcesAvailable[0];
+    }
+};
+
+AudioSourceUI.AudioSource = class AudioSource {
+    constructor(parent, audioSource, index) {
+        this.parent = parent;
+        this.audioSource = audioSource;
+        this.index = index;
+
+        this.container = AudioSourceUI.instantiateTemplate('#audio-source-template').appendTo(parent.container);
+        this.select = this.container.find('.audio-source-select');
+        this.removeButton = this.container.find('.audio-source-remove');
+
+        this.select.val(audioSource);
+
+        this.select.on('change', () => this.onSelectChanged());
+        this.removeButton.on('click', () => this.onRemoveClicked());
+    }
+
+    cleanup() {
+        this.select.off('change');
+        this.removeButton.off('click');
+        this.container.remove();
+    }
+
+    save() {
+        this.parent.save();
+    }
+
+    onSelectChanged() {
+        this.audioSource = this.select.val();
+        this.parent.audioSources[this.index] = this.audioSource;
+        this.save();
+    }
+
+    onRemoveClicked() {
+        this.parent.remove(this);
+        this.save();
+    }
+};
diff --git a/ext/bg/js/audio.js b/ext/bg/js/audio.js
index 2e5db7cc..9e0ae67c 100644
--- a/ext/bg/js/audio.js
+++ b/ext/bg/js/audio.js
@@ -17,8 +17,8 @@
  */
 
 
-async function audioBuildUrl(definition, mode, cache={}) {
-    if (mode === 'jpod101') {
+const audioUrlBuilders = {
+    'jpod101': async (definition) => {
         let kana = definition.reading;
         let kanji = definition.expression;
 
@@ -35,84 +35,80 @@ async function audioBuildUrl(definition, mode, cache={}) {
             params.push(`kana=${encodeURIComponent(kana)}`);
         }
 
-        const url = `https://assets.languagepod101.com/dictionary/japanese/audiomp3.php?${params.join('&')}`;
-        return Promise.resolve(url);
-    } else if (mode === 'jpod101-alternate') {
-        return new Promise((resolve, reject) => {
-            const response = cache[definition.expression];
-            if (response) {
-                resolve(response);
-            } else {
-                const data = {
-                    post: 'dictionary_reference',
-                    match_type: 'exact',
-                    search_query: definition.expression
-                };
-
-                const params = [];
-                for (const key in data) {
-                    params.push(`${encodeURIComponent(key)}=${encodeURIComponent(data[key])}`);
-                }
-
-                const xhr = new XMLHttpRequest();
-                xhr.open('POST', 'https://www.japanesepod101.com/learningcenter/reference/dictionary_post');
-                xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
-                xhr.addEventListener('error', () => reject('Failed to scrape audio data'));
-                xhr.addEventListener('load', () => {
-                    cache[definition.expression] = xhr.responseText;
-                    resolve(xhr.responseText);
-                });
-
-                xhr.send(params.join('&'));
-            }
-        }).then(response => {
-            const dom = new DOMParser().parseFromString(response, 'text/html');
-            for (const row of dom.getElementsByClassName('dc-result-row')) {
-                try {
-                    const url = row.querySelector('audio>source[src]').getAttribute('src');
-                    const reading = row.getElementsByClassName('dc-vocab_kana').item(0).innerText;
-                    if (url && reading && (!definition.reading || definition.reading === reading)) {
-                        return audioUrlNormalize(url, 'https://www.japanesepod101.com', '/learningcenter/reference/');
-                    }
-                } catch (e) {
-                    // NOP
-                }
-            }
+        return `https://assets.languagepod101.com/dictionary/japanese/audiomp3.php?${params.join('&')}`;
+    },
+    'jpod101-alternate': async (definition) => {
+        const response = await new Promise((resolve, reject) => {
+            const xhr = new XMLHttpRequest();
+            xhr.open('POST', 'https://www.japanesepod101.com/learningcenter/reference/dictionary_post');
+            xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
+            xhr.addEventListener('error', () => reject(new Error('Failed to scrape audio data')));
+            xhr.addEventListener('load', () => resolve(xhr.responseText));
+            xhr.send(`post=dictionary_reference&match_type=exact&search_query=${encodeURIComponent(definition.expression)}`);
         });
-    } else if (mode === 'jisho') {
-        return new Promise((resolve, reject) => {
-            const response = cache[definition.expression];
-            if (response) {
-                resolve(response);
-            } else {
-                const xhr = new XMLHttpRequest();
-                xhr.open('GET', `https://jisho.org/search/${definition.expression}`);
-                xhr.addEventListener('error', () => reject('Failed to scrape audio data'));
-                xhr.addEventListener('load', () => {
-                    cache[definition.expression] = xhr.responseText;
-                    resolve(xhr.responseText);
-                });
-
-                xhr.send();
-            }
-        }).then(response => {
+
+        const dom = new DOMParser().parseFromString(response, 'text/html');
+        for (const row of dom.getElementsByClassName('dc-result-row')) {
             try {
-                const dom = new DOMParser().parseFromString(response, 'text/html');
-                const audio = dom.getElementById(`audio_${definition.expression}:${definition.reading}`);
-                if (audio) {
-                    const url = audio.getElementsByTagName('source').item(0).getAttribute('src');
-                    if (url) {
-                        return audioUrlNormalize(url, 'https://jisho.org', '/search/');
-                    }
+                const url = row.querySelector('audio>source[src]').getAttribute('src');
+                const reading = row.getElementsByClassName('dc-vocab_kana').item(0).innerText;
+                if (url && reading && (!definition.reading || definition.reading === reading)) {
+                    return audioUrlNormalize(url, 'https://www.japanesepod101.com', '/learningcenter/reference/');
                 }
             } catch (e) {
                 // NOP
             }
+        }
+
+        throw new Error('Failed to find audio URL');
+    },
+    'jisho': async (definition) => {
+        const response = await new Promise((resolve, reject) => {
+            const xhr = new XMLHttpRequest();
+            xhr.open('GET', `https://jisho.org/search/${definition.expression}`);
+            xhr.addEventListener('error', () => reject(new Error('Failed to scrape audio data')));
+            xhr.addEventListener('load', () => resolve(xhr.responseText));
+            xhr.send();
         });
+
+        const dom = new DOMParser().parseFromString(response, 'text/html');
+        try {
+            const audio = dom.getElementById(`audio_${definition.expression}:${definition.reading}`);
+            if (audio !== null) {
+                const url = audio.getElementsByTagName('source').item(0).getAttribute('src');
+                if (url) {
+                    return audioUrlNormalize(url, 'https://jisho.org', '/search/');
+                }
+            }
+        } catch (e) {
+            // NOP
+        }
+
+        throw new Error('Failed to find audio URL');
+    },
+    'custom': async (definition, optionsContext) => {
+        const options = await apiOptionsGet(optionsContext);
+        const customSourceUrl = options.audio.customSourceUrl;
+        return customSourceUrl.replace(/\{([^\}]*)\}/g, (m0, m1) => (definition.hasOwnProperty(m1) ? `${definition[m1]}` : m0));
     }
-    else {
-        return Promise.resolve();
+};
+
+async function audioBuildUrl(definition, mode, optionsContext, cache={}) {
+    const cacheKey = `${mode}:${definition.expression}`;
+    if (cache.hasOwnProperty(cacheKey)) {
+        return Promise.resolve(cache[cacheKey]);
+    }
+
+    if (audioUrlBuilders.hasOwnProperty(mode)) {
+        const handler = audioUrlBuilders[mode];
+        return handler(definition, optionsContext).then(
+            (url) => {
+                cache[cacheKey] = url;
+                return url;
+            },
+            () => null);
     }
+    return null;
 }
 
 function audioUrlNormalize(url, baseUrl, basePath) {
@@ -145,9 +141,10 @@ function audioBuildFilename(definition) {
 
         return filename += '.mp3';
     }
+    return null;
 }
 
-async function audioInject(definition, fields, mode) {
+async function audioInject(definition, fields, sources, optionsContext) {
     let usesAudio = false;
     for (const name in fields) {
         if (fields[name].includes('{audio}')) {
@@ -166,11 +163,12 @@ async function audioInject(definition, fields, mode) {
             audioSourceDefinition = definition.expressions[0];
         }
 
-        const url = await audioBuildUrl(audioSourceDefinition, mode);
-        const filename = audioBuildFilename(audioSourceDefinition);
-
-        if (url && filename) {
-            definition.audio = {url, filename};
+        const {url} = await audioGetFromSources(audioSourceDefinition, sources, optionsContext, false);
+        if (url !== null) {
+            const filename = audioBuildFilename(audioSourceDefinition);
+            if (filename !== null) {
+                definition.audio = {url, filename};
+            }
         }
 
         return true;
diff --git a/ext/bg/js/backend.js b/ext/bg/js/backend.js
index 3c5ad885..453f4282 100644
--- a/ext/bg/js/backend.js
+++ b/ext/bg/js/backend.js
@@ -75,7 +75,7 @@ class Backend {
             const promise = handler(params, sender);
             promise
                 .then(result => callback({result}))
-                .catch(error => callback({error: typeof error.toString === 'function' ? error.toString() : error}));
+                .catch(error => callback(errorToJson(error)));
         }
 
         return true;
@@ -181,7 +181,7 @@ Backend.messageHandlers = {
     noteView: ({noteId}) => apiNoteView(noteId),
     templateRender: ({template, data, dynamic}) => apiTemplateRender(template, data, dynamic),
     commandExec: ({command}) => apiCommandExec(command),
-    audioGetUrl: ({definition, source}) => apiAudioGetUrl(definition, source),
+    audioGetUrl: ({definition, source, optionsContext}) => apiAudioGetUrl(definition, source, optionsContext),
     screenshotGet: ({options}, sender) => apiScreenshotGet(options, sender),
     forward: ({action, params}, sender) => apiForward(action, params, sender),
     frameInformationGet: (params, sender) => apiFrameInformationGet(sender),
diff --git a/ext/bg/js/database.js b/ext/bg/js/database.js
index e8214c3c..771a71c9 100644
--- a/ext/bg/js/database.js
+++ b/ext/bg/js/database.js
@@ -25,7 +25,7 @@ class Database {
 
     async prepare() {
         if (this.db) {
-            throw 'Database already initialized';
+            throw new Error('Database already initialized');
         }
 
         this.db = new Dexie('dict');
@@ -48,9 +48,7 @@ class Database {
     }
 
     async purge() {
-        if (!this.db) {
-            throw 'Database not initialized';
-        }
+        this.validate();
 
         this.db.close();
         await this.db.delete();
@@ -61,9 +59,7 @@ class Database {
     }
 
     async findTerms(term, titles) {
-        if (!this.db) {
-            throw 'Database not initialized';
-        }
+        this.validate();
 
         const results = [];
         await this.db.terms.where('expression').equals(term).or('reading').equals(term).each(row => {
@@ -80,7 +76,12 @@ class Database {
         const visited = {};
         const results = [];
         const createResult = Database.createTerm;
-        const filter = (row) => titles.includes(row.dictionary);
+        const processRow = (row, index) => {
+            if (titles.includes(row.dictionary) && !visited.hasOwnProperty(row.id)) {
+                visited[row.id] = true;
+                results.push(createResult(row, index));
+            }
+        };
 
         const db = this.db.backendDB();
         const dbTransaction = db.transaction(['terms'], 'readonly');
@@ -91,8 +92,8 @@ class Database {
         for (let i = 0; i < terms.length; ++i) {
             const only = IDBKeyRange.only(terms[i]);
             promises.push(
-                Database.getAll(dbIndex1, only, i, visited, filter, createResult, results),
-                Database.getAll(dbIndex2, only, i, visited, filter, createResult, results)
+                Database.getAll(dbIndex1, only, i, processRow),
+                Database.getAll(dbIndex2, only, i, processRow)
             );
         }
 
@@ -102,9 +103,7 @@ class Database {
     }
 
     async findTermsExact(term, reading, titles) {
-        if (!this.db) {
-            throw 'Database not initialized';
-        }
+        this.validate();
 
         const results = [];
         await this.db.terms.where('expression').equals(term).each(row => {
@@ -117,9 +116,7 @@ class Database {
     }
 
     async findTermsBySequence(sequence, mainDictionary) {
-        if (!this.db) {
-            throw 'Database not initialized';
-        }
+        this.validate();
 
         const results = [];
         await this.db.terms.where('sequence').equals(sequence).each(row => {
@@ -132,9 +129,7 @@ class Database {
     }
 
     async findTermMeta(term, titles) {
-        if (!this.db) {
-            throw 'Database not initialized';
-        }
+        this.validate();
 
         const results = [];
         await this.db.termMeta.where('expression').equals(term).each(row => {
@@ -152,10 +147,13 @@ class Database {
 
     async findTermMetaBulk(terms, titles) {
         const promises = [];
-        const visited = {};
         const results = [];
         const createResult = Database.createTermMeta;
-        const filter = (row) => titles.includes(row.dictionary);
+        const processRow = (row, index) => {
+            if (titles.includes(row.dictionary)) {
+                results.push(createResult(row, index));
+            }
+        };
 
         const db = this.db.backendDB();
         const dbTransaction = db.transaction(['termMeta'], 'readonly');
@@ -164,7 +162,7 @@ class Database {
 
         for (let i = 0; i < terms.length; ++i) {
             const only = IDBKeyRange.only(terms[i]);
-            promises.push(Database.getAll(dbIndex, only, i, visited, filter, createResult, results));
+            promises.push(Database.getAll(dbIndex, only, i, processRow));
         }
 
         await Promise.all(promises);
@@ -173,9 +171,7 @@ class Database {
     }
 
     async findKanji(kanji, titles) {
-        if (!this.db) {
-            throw 'Database not initialized';
-        }
+        this.validate();
 
         const results = [];
         await this.db.kanji.where('character').equals(kanji).each(row => {
@@ -196,9 +192,7 @@ class Database {
     }
 
     async findKanjiMeta(kanji, titles) {
-        if (!this.db) {
-            throw 'Database not initialized';
-        }
+        this.validate();
 
         const results = [];
         await this.db.kanjiMeta.where('character').equals(kanji).each(row => {
@@ -224,9 +218,7 @@ class Database {
     }
 
     async findTagForTitle(name, title) {
-        if (!this.db) {
-            throw 'Database not initialized';
-        }
+        this.validate();
 
         const cache = (this.tagCache.hasOwnProperty(title) ? this.tagCache[title] : (this.tagCache[title] = {}));
 
@@ -243,17 +235,13 @@ class Database {
     }
 
     async summarize() {
-        if (this.db) {
-            return this.db.dictionaries.toArray();
-        } else {
-            throw 'Database not initialized';
-        }
+        this.validate();
+
+        return this.db.dictionaries.toArray();
     }
 
     async importDictionary(archive, progressCallback, exceptions) {
-        if (!this.db) {
-            throw 'Database not initialized';
-        }
+        this.validate();
 
         const maxTransactionLength = 1000;
         const bulkAdd = async (table, items, total, current) => {
@@ -293,12 +281,12 @@ class Database {
 
         const indexDataLoaded = async summary => {
             if (summary.version > 3) {
-                throw 'Unsupported dictionary version';
+                throw new Error('Unsupported dictionary version');
             }
 
             const count = await this.db.dictionaries.where('title').equals(summary.title).count();
             if (count > 0) {
-                throw 'Dictionary is already imported';
+                throw new Error('Dictionary is already imported');
             }
 
             await this.db.dictionaries.add(summary);
@@ -424,6 +412,12 @@ class Database {
         );
     }
 
+    validate() {
+        if (this.db === null) {
+            throw new Error('Database not initialized');
+        }
+    }
+
     static async importDictionaryZip(
         archive,
         indexDataLoaded,
@@ -437,12 +431,12 @@ class Database {
 
         const indexFile = zip.files['index.json'];
         if (!indexFile) {
-            throw 'No dictionary index found in archive';
+            throw new Error('No dictionary index found in archive');
         }
 
         const index = JSON.parse(await indexFile.async('string'));
         if (!index.title || !index.revision) {
-            throw 'Unrecognized dictionary format';
+            throw new Error('Unrecognized dictionary format');
         }
 
         const summary = {
@@ -537,39 +531,32 @@ class Database {
         };
     }
 
-    static getAll(dbIndex, query, index, visited, filter, createResult, results) {
+    static getAll(dbIndex, query, context, processRow) {
         const fn = typeof dbIndex.getAll === 'function' ? Database.getAllFast : Database.getAllUsingCursor;
-        return fn(dbIndex, query, index, visited, filter, createResult, results);
+        return fn(dbIndex, query, context, processRow);
     }
 
-    static getAllFast(dbIndex, query, index, visited, filter, createResult, results) {
+    static getAllFast(dbIndex, query, context, processRow) {
         return new Promise((resolve, reject) => {
             const request = dbIndex.getAll(query);
             request.onerror = (e) => reject(e);
             request.onsuccess = (e) => {
                 for (const row of e.target.result) {
-                    if (filter(row, index) && !visited.hasOwnProperty(row.id)) {
-                        visited[row.id] = true;
-                        results.push(createResult(row, index));
-                    }
+                    processRow(row, context);
                 }
                 resolve();
             };
         });
     }
 
-    static getAllUsingCursor(dbIndex, query, index, visited, filter, createResult, results) {
+    static getAllUsingCursor(dbIndex, query, context, processRow) {
         return new Promise((resolve, reject) => {
             const request = dbIndex.openCursor(query, 'next');
             request.onerror = (e) => reject(e);
             request.onsuccess = (e) => {
                 const cursor = e.target.result;
                 if (cursor) {
-                    const row = cursor.value;
-                    if (filter(row, index) && !visited.hasOwnProperty(row.id)) {
-                        visited[row.id] = true;
-                        results.push(createResult(row, index));
-                    }
+                    processRow(cursor.value, context);
                     cursor.continue();
                 } else {
                     resolve();
diff --git a/ext/bg/js/deinflector.js b/ext/bg/js/deinflector.js
index ad77895c..ce4b2961 100644
--- a/ext/bg/js/deinflector.js
+++ b/ext/bg/js/deinflector.js
@@ -19,51 +19,74 @@
 
 class Deinflector {
     constructor(reasons) {
-        this.reasons = reasons;
+        this.reasons = Deinflector.normalizeReasons(reasons);
     }
 
     deinflect(source) {
         const results = [{
             source,
             term: source,
-            rules: [],
+            rules: 0,
             definitions: [],
             reasons: []
         }];
         for (let i = 0; i < results.length; ++i) {
-            const entry = results[i];
-
-            for (const reason in this.reasons) {
-                for (const variant of this.reasons[reason]) {
-                    let accept = entry.rules.length === 0;
-                    if (!accept) {
-                        for (const rule of entry.rules) {
-                            if (variant.rulesIn.includes(rule)) {
-                                accept = true;
-                                break;
-                            }
-                        }
-                    }
-
-                    if (!accept || !entry.term.endsWith(variant.kanaIn)) {
-                        continue;
-                    }
-
-                    const term = entry.term.slice(0, -variant.kanaIn.length) + variant.kanaOut;
-                    if (term.length === 0) {
+            const {rules, term, reasons} = results[i];
+            for (const [reason, variants] of this.reasons) {
+                for (const [kanaIn, kanaOut, rulesIn, rulesOut] of variants) {
+                    if (
+                        (rules !== 0 && (rules & rulesIn) === 0) ||
+                        !term.endsWith(kanaIn) ||
+                        (term.length - kanaIn.length + kanaOut.length) <= 0
+                    ) {
                         continue;
                     }
 
                     results.push({
                         source,
-                        term,
-                        rules: variant.rulesOut,
+                        term: term.slice(0, -kanaIn.length) + kanaOut,
+                        rules: rulesOut,
                         definitions: [],
-                        reasons: [reason, ...entry.reasons]
+                        reasons: [reason, ...reasons]
                     });
                 }
             }
         }
         return results;
     }
+
+    static normalizeReasons(reasons) {
+        const normalizedReasons = [];
+        for (const reason in reasons) {
+            const variants = [];
+            for (const {kanaIn, kanaOut, rulesIn, rulesOut} of reasons[reason]) {
+                variants.push([
+                    kanaIn,
+                    kanaOut,
+                    Deinflector.rulesToRuleFlags(rulesIn),
+                    Deinflector.rulesToRuleFlags(rulesOut)
+                ]);
+            }
+            normalizedReasons.push([reason, variants]);
+        }
+        return normalizedReasons;
+    }
+
+    static rulesToRuleFlags(rules) {
+        const ruleTypes = Deinflector.ruleTypes;
+        let value = 0;
+        for (const rule of rules) {
+            value |= ruleTypes[rule];
+        }
+        return value;
+    }
 }
+
+Deinflector.ruleTypes = {
+    'v1':    0b0000001, // Verb ichidan
+    'v5':    0b0000010, // Verb godan
+    'vs':    0b0000100, // Verb suru
+    'vk':    0b0001000, // Verb kuru
+    'adj-i': 0b0010000, // Adjective i
+    'iru':   0b0100000, // Intermediate -iru endings for progressive or perfect tense
+};
diff --git a/ext/bg/js/options.js b/ext/bg/js/options.js
index 2c9de1ec..d0aa6fd3 100644
--- a/ext/bg/js/options.js
+++ b/ext/bg/js/options.js
@@ -74,6 +74,18 @@ const profileOptionsVersionUpdates = [
         if (utilStringHashCode(options.anki.fieldTemplates) === -250091611) {
             options.anki.fieldTemplates = profileOptionsGetDefaultFieldTemplates();
         }
+    },
+    (options) => {
+        const oldAudioSource = options.general.audioSource;
+        const disabled = oldAudioSource === 'disabled';
+        options.audio.enabled = !disabled;
+        options.audio.volume = options.general.audioVolume;
+        options.audio.autoPlay = options.general.autoPlayAudio;
+        options.audio.sources = [disabled ? 'jpod101' : oldAudioSource];
+
+        delete options.general.audioSource;
+        delete options.general.audioVolume;
+        delete options.general.autoPlayAudio;
     }
 ];
 
@@ -247,9 +259,6 @@ function profileOptionsCreateDefaults() {
     return {
         general: {
             enable: true,
-            audioSource: 'jpod101',
-            audioVolume: 100,
-            autoPlayAudio: false,
             resultOutputMode: 'group',
             debugInfo: false,
             maxResults: 32,
@@ -270,6 +279,14 @@ function profileOptionsCreateDefaults() {
             customPopupCss: ''
         },
 
+        audio: {
+            enabled: true,
+            sources: ['jpod101', 'jpod101-alternate', 'jisho', 'custom'],
+            volume: 100,
+            autoPlay: false,
+            customSourceUrl: ''
+        },
+
         scanning: {
             middleMouse: true,
             touchInputEnabled: true,
@@ -402,7 +419,7 @@ function optionsLoad() {
         chrome.storage.local.get(['options'], store => {
             const error = chrome.runtime.lastError;
             if (error) {
-                reject(error);
+                reject(new Error(error));
             } else {
                 resolve(store.options);
             }
@@ -431,7 +448,7 @@ function optionsSave(options) {
         chrome.storage.local.set({options: JSON.stringify(options)}, () => {
             const error = chrome.runtime.lastError;
             if (error) {
-                reject(error);
+                reject(new Error(error));
             } else {
                 resolve();
             }
diff --git a/ext/bg/js/request.js b/ext/bg/js/request.js
index e4359863..3afc1506 100644
--- a/ext/bg/js/request.js
+++ b/ext/bg/js/request.js
@@ -22,7 +22,7 @@ function requestJson(url, action, params) {
         const xhr = new XMLHttpRequest();
         xhr.overrideMimeType('application/json');
         xhr.addEventListener('load', () => resolve(xhr.responseText));
-        xhr.addEventListener('error', () => reject('Failed to connect'));
+        xhr.addEventListener('error', () => reject(new Error('Failed to connect')));
         xhr.open(action, url);
         if (params) {
             xhr.send(JSON.stringify(params));
@@ -34,7 +34,7 @@ function requestJson(url, action, params) {
             return JSON.parse(responseText);
         }
         catch (e) {
-            return Promise.reject('Invalid response');
+            return Promise.reject(new Error('Invalid response'));
         }
     });
 }
diff --git a/ext/bg/js/search-frontend.js b/ext/bg/js/search-frontend.js
index faec29ef..0c1a61ea 100644
--- a/ext/bg/js/search-frontend.js
+++ b/ext/bg/js/search-frontend.js
@@ -26,10 +26,8 @@ async function searchFrontendSetup() {
     if (!options.scanning.enableOnSearchPage) { return; }
 
     const scriptSrcs = [
-        '/fg/js/api.js',
         '/fg/js/frontend-api-receiver.js',
         '/fg/js/popup.js',
-        '/fg/js/util.js',
         '/fg/js/popup-proxy-host.js',
         '/fg/js/frontend.js'
     ];
diff --git a/ext/bg/js/search.js b/ext/bg/js/search.js
index 13ed1e08..ead9ba6f 100644
--- a/ext/bg/js/search.js
+++ b/ext/bg/js/search.js
@@ -29,7 +29,8 @@ class DisplaySearch extends Display {
         this.search = document.querySelector('#search');
         this.query = document.querySelector('#query');
         this.intro = document.querySelector('#intro');
-        this.introHidden = false;
+        this.introVisible = true;
+        this.introAnimationTimer = null;
 
         this.dependencies = Object.assign({}, this.dependencies, {docRangeFromPoint, docSentenceExtract});
 
@@ -38,12 +39,21 @@ class DisplaySearch extends Display {
         }
         if (this.query !== null) {
             this.query.addEventListener('input', () => this.onSearchInput(), false);
+
+            const query = DisplaySearch.getSearchQueryFromLocation(window.location.href);
+            if (query !== null) {
+                this.query.value = window.wanakana.toKana(query);
+                this.onSearchQueryUpdated(query, false);
+            }
+
             window.wanakana.bind(this.query);
         }
+
+        this.updateSearchButton();
     }
 
     onError(error) {
-        window.alert(`Error: ${error.toString ? error.toString() : error}`);
+        logError(error, true);
     }
 
     onSearchClear() {
@@ -56,41 +66,102 @@ class DisplaySearch extends Display {
     }
 
     onSearchInput() {
-        this.search.disabled = (this.query === null || this.query.value.length === 0);
+        this.updateSearchButton();
     }
 
-    async onSearch(e) {
+    onSearch(e) {
         if (this.query === null) {
             return;
         }
 
+        e.preventDefault();
+
+        const query = this.query.value;
+        const queryString = query.length > 0 ? `?query=${encodeURIComponent(query)}` : '';
+        window.history.replaceState(null, '', `${window.location.pathname}${queryString}`);
+        this.onSearchQueryUpdated(query, true);
+    }
+
+    async onSearchQueryUpdated(query, animate) {
         try {
-            e.preventDefault();
-            this.hideIntro();
-            const {length, definitions} = await apiTermsFind(this.query.value, this.optionsContext);
-            super.termsShow(definitions, await apiOptionsGet(this.optionsContext));
+            const valid = (query.length > 0);
+            this.setIntroVisible(!valid, animate);
+            this.updateSearchButton();
+            if (valid) {
+                const {definitions} = await apiTermsFind(query, this.optionsContext);
+                this.termsShow(definitions, await apiOptionsGet(this.optionsContext));
+            } else {
+                this.container.textContent = '';
+            }
         } catch (e) {
             this.onError(e);
         }
     }
 
-    hideIntro() {
-        if (this.introHidden) {
+    setIntroVisible(visible, animate) {
+        if (this.introVisible === visible) {
             return;
         }
 
-        this.introHidden = true;
+        this.introVisible = visible;
 
         if (this.intro === null) {
             return;
         }
 
-        const size = this.intro.getBoundingClientRect();
-        this.intro.style.height = `${size.height}px`;
-        this.intro.style.transition = 'height 0.4s ease-in-out 0s';
-        window.getComputedStyle(this.intro).getPropertyValue('height'); // Commits height so next line can start animation
+        if (this.introAnimationTimer !== null) {
+            clearTimeout(this.introAnimationTimer);
+            this.introAnimationTimer = null;
+        }
+
+        if (visible) {
+            this.showIntro(animate);
+        } else {
+            this.hideIntro(animate);
+        }
+    }
+
+    showIntro(animate) {
+        if (animate) {
+            const duration = 0.4;
+            this.intro.style.transition = '';
+            this.intro.style.height = '';
+            const size = this.intro.getBoundingClientRect();
+            this.intro.style.height = `0px`;
+            this.intro.style.transition = `height ${duration}s ease-in-out 0s`;
+            window.getComputedStyle(this.intro).getPropertyValue('height'); // Commits height so next line can start animation
+            this.intro.style.height = `${size.height}px`;
+            this.introAnimationTimer = setTimeout(() => {
+                this.intro.style.height = '';
+                this.introAnimationTimer = null;
+            }, duration * 1000);
+        } else {
+            this.intro.style.transition = '';
+            this.intro.style.height = '';
+        }
+    }
+
+    hideIntro(animate) {
+        if (animate) {
+            const duration = 0.4;
+            const size = this.intro.getBoundingClientRect();
+            this.intro.style.height = `${size.height}px`;
+            this.intro.style.transition = `height ${duration}s ease-in-out 0s`;
+            window.getComputedStyle(this.intro).getPropertyValue('height'); // Commits height so next line can start animation
+        } else {
+            this.intro.style.transition = '';
+        }
         this.intro.style.height = '0';
     }
+
+    updateSearchButton() {
+        this.search.disabled = this.introVisible && (this.query === null || this.query.value.length === 0);
+    }
+
+    static getSearchQueryFromLocation(url) {
+        let match = /^[^\?#]*\?(?:[^&#]*&)?query=([^&#]*)/.exec(url);
+        return match !== null ? decodeURIComponent(match[1]) : null;
+    }
 }
 
 window.yomichan_search = new DisplaySearch();
diff --git a/ext/bg/js/settings.js b/ext/bg/js/settings.js
index 9838ea02..f3b5ff16 100644
--- a/ext/bg/js/settings.js
+++ b/ext/bg/js/settings.js
@@ -26,10 +26,7 @@ async function formRead(options) {
     options.general.showGuide = $('#show-usage-guide').prop('checked');
     options.general.compactTags = $('#compact-tags').prop('checked');
     options.general.compactGlossaries = $('#compact-glossaries').prop('checked');
-    options.general.autoPlayAudio = $('#auto-play-audio').prop('checked');
     options.general.resultOutputMode = $('#result-output-mode').val();
-    options.general.audioSource = $('#audio-playback-source').val();
-    options.general.audioVolume = parseFloat($('#audio-playback-volume').val());
     options.general.debugInfo = $('#show-debug-info').prop('checked');
     options.general.showAdvanced = $('#show-advanced-options').prop('checked');
     options.general.maxResults = parseInt($('#max-displayed-results').val(), 10);
@@ -44,6 +41,11 @@ async function formRead(options) {
     options.general.popupVerticalOffset2 = parseInt($('#popup-vertical-offset2').val(), 10);
     options.general.customPopupCss = $('#custom-popup-css').val();
 
+    options.audio.enabled = $('#audio-playback-enabled').prop('checked');
+    options.audio.autoPlay = $('#auto-play-audio').prop('checked');
+    options.audio.volume = parseFloat($('#audio-playback-volume').val());
+    options.audio.customSourceUrl = $('#audio-custom-source').val();
+
     options.scanning.middleMouse = $('#middle-mouse-button-scan').prop('checked');
     options.scanning.touchInputEnabled = $('#touch-input-enabled').prop('checked');
     options.scanning.selectText = $('#select-matched-text').prop('checked');
@@ -92,10 +94,7 @@ async function formWrite(options) {
     $('#show-usage-guide').prop('checked', options.general.showGuide);
     $('#compact-tags').prop('checked', options.general.compactTags);
     $('#compact-glossaries').prop('checked', options.general.compactGlossaries);
-    $('#auto-play-audio').prop('checked', options.general.autoPlayAudio);
     $('#result-output-mode').val(options.general.resultOutputMode);
-    $('#audio-playback-source').val(options.general.audioSource);
-    $('#audio-playback-volume').val(options.general.audioVolume);
     $('#show-debug-info').prop('checked', options.general.debugInfo);
     $('#show-advanced-options').prop('checked', options.general.showAdvanced);
     $('#max-displayed-results').val(options.general.maxResults);
@@ -110,6 +109,11 @@ async function formWrite(options) {
     $('#popup-vertical-offset2').val(options.general.popupVerticalOffset2);
     $('#custom-popup-css').val(options.general.customPopupCss);
 
+    $('#audio-playback-enabled').prop('checked', options.audio.enabled);
+    $('#auto-play-audio').prop('checked', options.audio.autoPlay);
+    $('#audio-playback-volume').val(options.audio.volume);
+    $('#audio-custom-source').val(options.audio.customSourceUrl);
+
     $('#middle-mouse-button-scan').prop('checked', options.scanning.middleMouse);
     $('#touch-input-enabled').prop('checked', options.scanning.touchInputEnabled);
     $('#select-matched-text').prop('checked', options.scanning.selectText);
@@ -154,7 +158,7 @@ function formSetupEventListeners() {
     $('#dict-file-button').click(onDictionaryImportButtonClick);
 
     $('#field-templates-reset').click(utilAsync(onAnkiFieldTemplatesReset));
-    $('input, select, textarea').not('.anki-model').not('.profile-form *').change(utilAsync(onFormOptionsChanged));
+    $('input, select, textarea').not('.anki-model').not('.ignore-form-changes *').change(utilAsync(onFormOptionsChanged));
     $('.anki-model').change(utilAsync(onAnkiModelChanged));
 }
 
@@ -244,6 +248,7 @@ async function onReady() {
     showExtensionInformation();
 
     formSetupEventListeners();
+    await audioSettingsInitialize();
     await profileOptionsSetup();
 
     storageInfoInitialize();
@@ -255,6 +260,20 @@ $(document).ready(utilAsync(onReady));
 
 
 /*
+ * Audio
+ */
+
+let audioSourceUI = null;
+
+async function audioSettingsInitialize() {
+    const optionsContext = getOptionsContext();
+    const options = await apiOptionsGet(optionsContext);
+    audioSourceUI = new AudioSourceUI.Container(options.audio.sources, $('.audio-source-list'), $('.audio-source-add'));
+    audioSourceUI.save = () => apiOptionsSave();
+}
+
+
+/*
  * Remote options updates
  */
 
diff --git a/ext/bg/js/templates.js b/ext/bg/js/templates.js
index e12d1bf3..c61f5d7f 100644
--- a/ext/bg/js/templates.js
+++ b/ext/bg/js/templates.js
@@ -61,7 +61,7 @@ templates['kanji.html'] = template({"1":function(container,depth0,helpers,partia
   return "<div class=\"entry\" data-type=\"kanji\">\n    <div class=\"actions\">\n"
     + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.addable : depth0),{"name":"if","hash":{},"fn":container.program(11, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.source : depth0),{"name":"if","hash":{},"fn":container.program(13, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
-    + "        <img src=\"/mixed/img/entry-current.png\" class=\"current\" title=\"Current entry (Alt + Up/Down/Home/End/PgUp/PgDn)\" alt>\n    </div>\n\n    <div class=\"glyph\">"
+    + "        <img src=\"/mixed/img/entry-current.svg\" class=\"current\" title=\"Current entry (Alt + Up/Down/Home/End/PgUp/PgDn)\" alt>\n    </div>\n\n    <div class=\"glyph\">"
     + container.escapeExpression(((helper = (helper = helpers.character || (depth0 != null ? depth0.character : depth0)) != null ? helper : helpers.helperMissing),(typeof helper === "function" ? helper.call(alias1,{"name":"character","hash":{},"data":data}) : helper)))
     + "</div>\n\n"
     + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.frequencies : depth0),{"name":"if","hash":{},"fn":container.program(15, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
@@ -85,9 +85,9 @@ templates['kanji.html'] = template({"1":function(container,depth0,helpers,partia
     + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.debug : depth0),{"name":"if","hash":{},"fn":container.program(31, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "</div>\n";
 },"11":function(container,depth0,helpers,partials,data) {
-    return "        <a href=\"#\" class=\"action-view-note pending disabled\"><img src=\"/mixed/img/view-note.png\" title=\"View added note (Alt + V)\" alt></a>\n        <a href=\"#\" class=\"action-add-note pending disabled\" data-mode=\"kanji\"><img src=\"/mixed/img/add-kanji.png\" title=\"Add Kanji (Alt + K)\" alt></a>\n";
+    return "        <a href=\"#\" class=\"action-view-note pending disabled\"><img src=\"/mixed/img/view-note.svg\" title=\"View added note (Alt + V)\" alt></a>\n        <a href=\"#\" class=\"action-add-note pending disabled\" data-mode=\"kanji\"><img src=\"/mixed/img/add-term-kanji.svg\" title=\"Add Kanji (Alt + K)\" alt></a>\n";
 },"13":function(container,depth0,helpers,partials,data) {
-    return "        <a href=\"#\" class=\"source-term\"><img src=\"/mixed/img/source-term.png\" title=\"Source term (Alt + B)\" alt></a>\n";
+    return "        <a href=\"#\" class=\"source-term\"><img src=\"/mixed/img/source-term.svg\" title=\"Source term (Alt + B)\" alt></a>\n";
 },"15":function(container,depth0,helpers,partials,data) {
     var stack1;
 
@@ -290,7 +290,7 @@ templates['terms.html'] = template({"1":function(container,depth0,helpers,partia
     + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.addable : depth0),{"name":"if","hash":{},"fn":container.program(23, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + ((stack1 = helpers.unless.call(alias1,(depth0 != null ? depth0.merged : depth0),{"name":"unless","hash":{},"fn":container.program(25, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.source : depth0),{"name":"if","hash":{},"fn":container.program(28, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
-    + "        <img src=\"/mixed/img/entry-current.png\" class=\"current\" title=\"Current entry (Alt + Up/Down/Home/End/PgUp/PgDn)\" alt>\n    </div>\n\n"
+    + "        <img src=\"/mixed/img/entry-current.svg\" class=\"current\" title=\"Current entry (Alt + Up/Down/Home/End/PgUp/PgDn)\" alt>\n    </div>\n\n"
     + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.merged : depth0),{"name":"if","hash":{},"fn":container.program(30, data, 0, blockParams, depths),"inverse":container.program(45, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "")
     + "\n"
     + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.reasons : depth0),{"name":"if","hash":{},"fn":container.program(49, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
@@ -302,15 +302,15 @@ templates['terms.html'] = template({"1":function(container,depth0,helpers,partia
     + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.debug : depth0),{"name":"if","hash":{},"fn":container.program(65, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "</div>\n";
 },"23":function(container,depth0,helpers,partials,data) {
-    return "        <a href=\"#\" class=\"action-view-note pending disabled\"><img src=\"/mixed/img/view-note.png\" title=\"View added note (Alt + V)\" alt></a>\n        <a href=\"#\" class=\"action-add-note pending disabled\" data-mode=\"term-kanji\"><img src=\"/mixed/img/add-term-kanji.png\" title=\"Add expression (Alt + E)\" alt></a>\n        <a href=\"#\" class=\"action-add-note pending disabled\" data-mode=\"term-kana\"><img src=\"/mixed/img/add-term-kana.png\" title=\"Add reading (Alt + R)\" alt></a>\n";
+    return "        <a href=\"#\" class=\"action-view-note pending disabled\"><img src=\"/mixed/img/view-note.svg\" title=\"View added note (Alt + V)\" alt></a>\n        <a href=\"#\" class=\"action-add-note pending disabled\" data-mode=\"term-kanji\"><img src=\"/mixed/img/add-term-kanji.svg\" title=\"Add expression (Alt + E)\" alt></a>\n        <a href=\"#\" class=\"action-add-note pending disabled\" data-mode=\"term-kana\"><img src=\"/mixed/img/add-term-kana.svg\" title=\"Add reading (Alt + R)\" alt></a>\n";
 },"25":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return ((stack1 = helpers["if"].call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.playback : depth0),{"name":"if","hash":{},"fn":container.program(26, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "");
 },"26":function(container,depth0,helpers,partials,data) {
-    return "        <a href=\"#\" class=\"action-play-audio\"><img src=\"/mixed/img/play-audio.png\" title=\"Play audio (Alt + P)\" alt></a>\n";
+    return "        <a href=\"#\" class=\"action-play-audio\"><img src=\"/mixed/img/play-audio.svg\" title=\"Play audio (Alt + P)\" alt></a>\n";
 },"28":function(container,depth0,helpers,partials,data) {
-    return "        <a href=\"#\" class=\"source-term\"><img src=\"/mixed/img/source-term.png\" title=\"Source term (Alt + B)\" alt></a>\n";
+    return "        <a href=\"#\" class=\"source-term\"><img src=\"/mixed/img/source-term.svg\" title=\"Source term (Alt + B)\" alt></a>\n";
 },"30":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
@@ -342,7 +342,7 @@ templates['terms.html'] = template({"1":function(container,depth0,helpers,partia
 
   return ((stack1 = container.lambda(depth0, depth0)) != null ? stack1 : "");
 },"35":function(container,depth0,helpers,partials,data) {
-    return "<a href=\"#\" class=\"action-play-audio\"><img src=\"/mixed/img/play-audio.png\" title=\"Play audio\" alt></a>";
+    return "<a href=\"#\" class=\"action-play-audio\"><img src=\"/mixed/img/play-audio.svg\" title=\"Play audio\" alt></a>";
 },"37":function(container,depth0,helpers,partials,data) {
     var stack1;
 
diff --git a/ext/bg/js/translator.js b/ext/bg/js/translator.js
index 65d746ea..601ee30c 100644
--- a/ext/bg/js/translator.js
+++ b/ext/bg/js/translator.js
@@ -238,8 +238,10 @@ class Translator {
         const definitions = await this.database.findTermsBulk(uniqueDeinflectionTerms, titles);
 
         for (const definition of definitions) {
+            const definitionRules = Deinflector.rulesToRuleFlags(definition.rules);
             for (const deinflection of uniqueDeinflectionArrays[definition.index]) {
-                if (Translator.definitionContainsAnyRule(definition, deinflection.rules)) {
+                const deinflectionRules = deinflection.rules;
+                if (deinflectionRules === 0 || (definitionRules & deinflectionRules) !== 0) {
                     deinflection.definitions.push(definition);
                 }
             }
@@ -248,19 +250,6 @@ class Translator {
         return deinflections.filter(e => e.definitions.length > 0);
     }
 
-    static definitionContainsAnyRule(definition, rules) {
-        if (rules.length === 0) {
-            return true;
-        }
-        const definitionRules = definition.rules;
-        for (const rule of rules) {
-            if (definitionRules.includes(rule)) {
-                return true;
-            }
-        }
-        return false;
-    }
-
     getDeinflections(text) {
         const deinflections = [];
 
diff --git a/ext/bg/lang/deinflect.json b/ext/bg/lang/deinflect.json
index c7977c88..682093e1 100644
--- a/ext/bg/lang/deinflect.json
+++ b/ext/bg/lang/deinflect.json
@@ -1186,7 +1186,7 @@
             "kanaIn": "て",
             "kanaOut": "る",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v1",
@@ -1197,7 +1197,7 @@
             "kanaIn": "いて",
             "kanaOut": "く",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1207,7 +1207,7 @@
             "kanaIn": "いで",
             "kanaOut": "ぐ",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1217,7 +1217,7 @@
             "kanaIn": "きて",
             "kanaOut": "くる",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "vk"
@@ -1227,7 +1227,7 @@
             "kanaIn": "くて",
             "kanaOut": "い",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "adj-i"
@@ -1237,7 +1237,7 @@
             "kanaIn": "して",
             "kanaOut": "す",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1247,7 +1247,7 @@
             "kanaIn": "して",
             "kanaOut": "する",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "vs"
@@ -1257,7 +1257,7 @@
             "kanaIn": "って",
             "kanaOut": "う",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1267,7 +1267,7 @@
             "kanaIn": "って",
             "kanaOut": "つ",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1277,7 +1277,7 @@
             "kanaIn": "って",
             "kanaOut": "る",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1287,7 +1287,7 @@
             "kanaIn": "んで",
             "kanaOut": "ぬ",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1297,7 +1297,7 @@
             "kanaIn": "んで",
             "kanaOut": "ぶ",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1307,7 +1307,7 @@
             "kanaIn": "んで",
             "kanaOut": "む",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1317,7 +1317,7 @@
             "kanaIn": "のたもうて",
             "kanaOut": "のたまう",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1327,7 +1327,7 @@
             "kanaIn": "いって",
             "kanaOut": "いく",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1337,7 +1337,7 @@
             "kanaIn": "おうて",
             "kanaOut": "おう",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1347,7 +1347,7 @@
             "kanaIn": "こうて",
             "kanaOut": "こう",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1357,7 +1357,7 @@
             "kanaIn": "そうて",
             "kanaOut": "そう",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1367,7 +1367,7 @@
             "kanaIn": "とうて",
             "kanaOut": "とう",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1377,7 +1377,7 @@
             "kanaIn": "行って",
             "kanaOut": "行く",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1387,7 +1387,7 @@
             "kanaIn": "逝って",
             "kanaOut": "逝く",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1397,7 +1397,7 @@
             "kanaIn": "往って",
             "kanaOut": "往く",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1407,7 +1407,7 @@
             "kanaIn": "請うて",
             "kanaOut": "請う",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1417,7 +1417,7 @@
             "kanaIn": "乞うて",
             "kanaOut": "乞う",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1427,7 +1427,7 @@
             "kanaIn": "恋うて",
             "kanaOut": "恋う",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1437,7 +1437,7 @@
             "kanaIn": "問うて",
             "kanaOut": "問う",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1447,7 +1447,7 @@
             "kanaIn": "負うて",
             "kanaOut": "負う",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1457,7 +1457,7 @@
             "kanaIn": "沿うて",
             "kanaOut": "沿う",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1467,7 +1467,7 @@
             "kanaIn": "添うて",
             "kanaOut": "添う",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1477,7 +1477,7 @@
             "kanaIn": "副うて",
             "kanaOut": "副う",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
@@ -1487,21 +1487,11 @@
             "kanaIn": "厭うて",
             "kanaOut": "厭う",
             "rulesIn": [
-              "iru"
+                "iru"
             ],
             "rulesOut": [
                 "v5"
             ]
-        },
-        {
-            "kanaIn": "で",
-            "kanaOut": "",
-            "rulesIn": [
-              "iru"
-            ],
-            "rulesOut": [
-                "neg-de"
-            ]
         }
     ],
     "-zu": [
@@ -2233,8 +2223,7 @@
             "kanaIn": "ない",
             "kanaOut": "る",
             "rulesIn": [
-                "adj-i",
-                "neg-de"
+                "adj-i"
             ],
             "rulesOut": [
                 "v1",
@@ -2245,8 +2234,7 @@
             "kanaIn": "かない",
             "kanaOut": "く",
             "rulesIn": [
-                "adj-i",
-                "neg-de"
+                "adj-i"
             ],
             "rulesOut": [
                 "v5"
@@ -2256,8 +2244,7 @@
             "kanaIn": "がない",
             "kanaOut": "ぐ",
             "rulesIn": [
-                "adj-i",
-                "neg-de"
+                "adj-i"
             ],
             "rulesOut": [
                 "v5"
@@ -2267,8 +2254,7 @@
             "kanaIn": "くない",
             "kanaOut": "い",
             "rulesIn": [
-                "adj-i",
-                "neg-de"
+                "adj-i"
             ],
             "rulesOut": [
                 "adj-i"
@@ -2278,8 +2264,7 @@
             "kanaIn": "こない",
             "kanaOut": "くる",
             "rulesIn": [
-                "adj-i",
-                "neg-de"
+                "adj-i"
             ],
             "rulesOut": [
                 "vk"
@@ -2289,8 +2274,7 @@
             "kanaIn": "さない",
             "kanaOut": "す",
             "rulesIn": [
-                "adj-i",
-                "neg-de"
+                "adj-i"
             ],
             "rulesOut": [
                 "v5"
@@ -2300,8 +2284,7 @@
             "kanaIn": "しない",
             "kanaOut": "する",
             "rulesIn": [
-                "adj-i",
-                "neg-de"
+                "adj-i"
             ],
             "rulesOut": [
                 "vs"
@@ -2311,8 +2294,7 @@
             "kanaIn": "たない",
             "kanaOut": "つ",
             "rulesIn": [
-                "adj-i",
-                "neg-de"
+                "adj-i"
             ],
             "rulesOut": [
                 "v5"
@@ -2322,8 +2304,7 @@
             "kanaIn": "なない",
             "kanaOut": "ぬ",
             "rulesIn": [
-                "adj-i",
-                "neg-de"
+                "adj-i"
             ],
             "rulesOut": [
                 "v5"
@@ -2333,8 +2314,7 @@
             "kanaIn": "ばない",
             "kanaOut": "ぶ",
             "rulesIn": [
-                "adj-i",
-                "neg-de"
+                "adj-i"
             ],
             "rulesOut": [
                 "v5"
@@ -2344,8 +2324,7 @@
             "kanaIn": "まない",
             "kanaOut": "む",
             "rulesIn": [
-                "adj-i",
-                "neg-de"
+                "adj-i"
             ],
             "rulesOut": [
                 "v5"
@@ -2355,8 +2334,7 @@
             "kanaIn": "らない",
             "kanaOut": "る",
             "rulesIn": [
-                "adj-i",
-                "neg-de"
+                "adj-i"
             ],
             "rulesOut": [
                 "v5"
@@ -2366,8 +2344,7 @@
             "kanaIn": "わない",
             "kanaOut": "う",
             "rulesIn": [
-                "adj-i",
-                "neg-de"
+                "adj-i"
             ],
             "rulesOut": [
                 "v5"
@@ -3681,8 +3658,8 @@
     ],
     "progressive or perfect": [
         {
-            "kanaIn": "いる",
-            "kanaOut": "",
+            "kanaIn": "ている",
+            "kanaOut": "て",
             "rulesIn": [
                 "v1"
             ],
@@ -3691,8 +3668,8 @@
             ]
         },
         {
-            "kanaIn": "る",
-            "kanaOut": "",
+            "kanaIn": "ておる",
+            "kanaOut": "て",
             "rulesIn": [
                 "v1"
             ],
@@ -3701,14 +3678,54 @@
             ]
         },
         {
-            "kanaIn": "おる",
-            "kanaOut": "",
+            "kanaIn": "てる",
+            "kanaOut": "て",
+            "rulesIn": [
+                "v1"
+            ],
+            "rulesOut": [
+                "iru"
+            ]
+        },
+        {
+            "kanaIn": "でいる",
+            "kanaOut": "で",
+            "rulesIn": [
+                "v1"
+            ],
+            "rulesOut": [
+                "iru"
+            ]
+        },
+        {
+            "kanaIn": "でおる",
+            "kanaOut": "で",
+            "rulesIn": [
+                "v1"
+            ],
+            "rulesOut": [
+                "iru"
+            ]
+        },
+        {
+            "kanaIn": "とる",
+            "kanaOut": "て",
             "rulesIn": [
                 "v1"
             ],
             "rulesOut": [
                 "iru"
             ]
+        },
+        {
+            "kanaIn": "ないでいる",
+            "kanaOut": "ない",
+            "rulesIn": [
+                "v1"
+            ],
+            "rulesOut": [
+                "adj-i"
+            ]
         }
     ]
 }
diff --git a/ext/bg/search.html b/ext/bg/search.html
index 668b2436..3284ed43 100644
--- a/ext/bg/search.html
+++ b/ext/bg/search.html
@@ -20,7 +20,7 @@
             <form class="input-group" style="padding-top: 10px;">
                 <input type="text" class="form-control" placeholder="Search for..." id="query" autofocus>
                 <span class="input-group-btn">
-                    <input type="submit" class="btn btn-default form-control" id="search" value="Search" disabled>
+                    <input type="submit" class="btn btn-default form-control" id="search" value="Search">
                 </span>
             </form>
 
@@ -36,14 +36,14 @@
 
         <script src="/mixed/js/extension.js"></script>
 
-        <script src="/bg/js/api.js"></script>
-        <script src="/bg/js/audio.js"></script>
         <script src="/bg/js/dictionary.js"></script>
         <script src="/bg/js/handlebars.js"></script>
         <script src="/bg/js/templates.js"></script>
-        <script src="/bg/js/util.js"></script>
+        <script src="/fg/js/api.js"></script>
         <script src="/fg/js/document.js"></script>
         <script src="/fg/js/source.js"></script>
+        <script src="/fg/js/util.js"></script>
+        <script src="/mixed/js/audio.js"></script>
         <script src="/mixed/js/display.js"></script>
         <script src="/mixed/js/japanese.js"></script>
         <script src="/mixed/js/scroll.js"></script>
diff --git a/ext/bg/settings.html b/ext/bg/settings.html
index 0bc5e14c..e4710283 100644
--- a/ext/bg/settings.html
+++ b/ext/bg/settings.html
@@ -14,7 +14,7 @@
                 <h1>Yomichan Options</h1>
             </div>
 
-            <div class="profile-form">
+            <div class="profile-form ignore-form-changes">
                 <h3>Profiles</h3>
 
                 <p class="help-block">
@@ -141,10 +141,6 @@
                 </div>
 
                 <div class="checkbox">
-                    <label><input type="checkbox" id="auto-play-audio"> Play audio automatically</label>
-                </div>
-
-                <div class="checkbox">
                     <label><input type="checkbox" id="show-advanced-options"> Show advanced options</label>
                 </div>
 
@@ -162,16 +158,6 @@
                 </div>
 
                 <div class="form-group">
-                    <label for="audio-playback-source">Audio playback source</label>
-                    <select class="form-control" id="audio-playback-source">
-                        <option value="disabled">Disabled</option>
-                        <option value="jpod101">JapanesePod101</option>
-                        <option value="jpod101-alternate">JapanesePod101 (alternate)</option>
-                        <option value="jisho">Jisho.org</option>
-                    </select>
-                </div>
-
-                <div class="form-group">
                     <label for="popup-display-mode">Popup display mode</label>
                     <select class="form-control" id="popup-display-mode">
                         <option value="default">Default</option>
@@ -180,11 +166,6 @@
                 </div>
 
                 <div class="form-group options-advanced">
-                    <label for="audio-playback-volume">Audio playback volume <span class="label-light">(percent)</span></label>
-                    <input type="number" min="0" max="100" id="audio-playback-volume" class="form-control">
-                </div>
-
-                <div class="form-group options-advanced">
                     <label for="max-displayed-results">Maximum displayed results</label>
                     <input type="number" min="1" id="max-displayed-results" class="form-control">
                 </div>
@@ -257,6 +238,47 @@
             </div>
 
             <div>
+                <h3>Audio Options</h3>
+
+                <div class="checkbox">
+                    <label><input type="checkbox" id="audio-playback-enabled"> Enable audio playback in search results</label>
+                </div>
+
+                <div class="checkbox">
+                    <label><input type="checkbox" id="auto-play-audio"> Play audio automatically</label>
+                </div>
+
+                <div class="form-group">
+                    <label for="audio-playback-volume">Audio playback volume <span class="label-light">(percent)</span></label>
+                    <input type="number" min="0" max="100" id="audio-playback-volume" class="form-control">
+                </div>
+
+                <div class="form-group options-advanced">
+                    <label for="audio-custom-source">Custom audio source <span class="label-light">(URL)</span></label>
+                    <input type="text" id="audio-custom-source" class="form-control" placeholder="Example: http://localhost/audio.mp3?expression={expression}&reading={reading}">
+                </div>
+
+                <div class="form-group ignore-form-changes">
+                    <label>Audio playback sources</label>
+                    <div class="audio-source-list"></div>
+                    <div class="input-group audio-source-options">
+                        <button class="btn btn-default audio-source-add" title="Add audio playback source"><span class="glyphicon glyphicon-plus"></span></button>
+                    </div>
+
+                    <template id="audio-source-template"><div class="input-group audio-source">
+                        <div class="input-group-addon audio-source-prefix"></div>
+                        <select class="form-control audio-source-select">
+                            <option value="jpod101">JapanesePod101</option>
+                            <option value="jpod101-alternate">JapanesePod101 (alternate)</option>
+                            <option value="jisho">Jisho.org</option>
+                            <option value="custom">Custom</option>
+                        </select>
+                        <div class="input-group-btn"><button class="btn btn-danger audio-source-remove" title="Remove"><span class="glyphicon glyphicon-remove"></span></button></div>
+                    </div></template>
+                </div>
+            </div>
+
+            <div>
                 <h3>Scanning Options</h3>
 
                 <div class="checkbox">
@@ -574,6 +596,7 @@
 
         <script src="/bg/js/anki.js"></script>
         <script src="/bg/js/api.js"></script>
+        <script src="/bg/js/audio-ui.js"></script>
         <script src="/bg/js/conditions.js"></script>
         <script src="/bg/js/conditions-ui.js"></script>
         <script src="/bg/js/dictionary.js"></script>
diff --git a/ext/fg/float.html b/ext/fg/float.html
index 52c7faa3..fe1aee8f 100644
--- a/ext/fg/float.html
+++ b/ext/fg/float.html
@@ -39,6 +39,7 @@
         <script src="/fg/js/util.js"></script>
         <script src="/fg/js/document.js"></script>
         <script src="/fg/js/source.js"></script>
+        <script src="/mixed/js/audio.js"></script>
         <script src="/mixed/js/display.js"></script>
         <script src="/mixed/js/scroll.js"></script>
 
diff --git a/ext/fg/js/api.js b/ext/fg/js/api.js
index d0ac649a..a553e514 100644
--- a/ext/fg/js/api.js
+++ b/ext/fg/js/api.js
@@ -45,8 +45,8 @@ function apiTemplateRender(template, data, dynamic) {
     return utilInvoke('templateRender', {data, template, dynamic});
 }
 
-function apiAudioGetUrl(definition, source) {
-    return utilInvoke('audioGetUrl', {definition, source});
+function apiAudioGetUrl(definition, source, optionsContext) {
+    return utilInvoke('audioGetUrl', {definition, source, optionsContext});
 }
 
 function apiCommandExec(command) {
diff --git a/ext/fg/js/float.js b/ext/fg/js/float.js
index 88842eef..8fdb6925 100644
--- a/ext/fg/js/float.js
+++ b/ext/fg/js/float.js
@@ -37,7 +37,7 @@ class DisplayFloat extends Display {
         if (window.yomichan_orphaned) {
             this.onOrphaned();
         } else {
-            window.alert(`Error: ${error.toString ? error.toString() : error}`);
+            logError(error, true);
         }
     }
 
diff --git a/ext/fg/js/frontend-api-receiver.js b/ext/fg/js/frontend-api-receiver.js
index 687e5c3c..fbfb3ab0 100644
--- a/ext/fg/js/frontend-api-receiver.js
+++ b/ext/fg/js/frontend-api-receiver.js
@@ -46,9 +46,8 @@ class FrontendApiReceiver {
             result => {
                 this.sendResult(port, id, senderId, {result});
             },
-            e => {
-                const error = typeof e.toString === 'function' ? e.toString() : e;
-                this.sendResult(port, id, senderId, {error});
+            error => {
+                this.sendResult(port, id, senderId, {error: errorToJson(error)});
             });
     }
 
diff --git a/ext/fg/js/frontend-api-sender.js b/ext/fg/js/frontend-api-sender.js
index 2e037e62..c6eeaeb2 100644
--- a/ext/fg/js/frontend-api-sender.js
+++ b/ext/fg/js/frontend-api-sender.js
@@ -31,7 +31,7 @@ class FrontendApiSender {
 
     invoke(action, params, target) {
         if (this.disconnected) {
-            return Promise.reject('Disconnected');
+            return Promise.reject(new Error('Disconnected'));
         }
 
         if (this.port === null) {
@@ -110,8 +110,8 @@ class FrontendApiSender {
         clearTimeout(info.timer);
         info.timer = null;
 
-        if (typeof data.error === 'string') {
-            info.reject(data.error);
+        if (typeof data.error !== 'undefined') {
+            info.reject(jsonToError(data.error));
         } else {
             info.resolve(data.result);
         }
@@ -122,7 +122,7 @@ class FrontendApiSender {
         const info = this.callbacks[id];
         delete this.callbacks[id];
         info.timer = null;
-        info.reject(reason);
+        info.reject(new Error(reason));
     }
 
     static generateId(length) {
diff --git a/ext/fg/js/frontend.js b/ext/fg/js/frontend.js
index 58dc0e4a..88cb93a9 100644
--- a/ext/fg/js/frontend.js
+++ b/ext/fg/js/frontend.js
@@ -38,6 +38,9 @@ class Frontend {
         this.mouseDownPrevent = false;
         this.clickPrevent = false;
         this.scrollPrevent = false;
+
+        this.enabled = false;
+        this.eventListeners = [];
     }
 
     static create() {
@@ -53,23 +56,7 @@ class Frontend {
 
     async prepare() {
         try {
-            this.options = await apiOptionsGet(this.getOptionsContext());
-
-            window.addEventListener('message', this.onWindowMessage.bind(this));
-            window.addEventListener('mousedown', this.onMouseDown.bind(this));
-            window.addEventListener('mousemove', this.onMouseMove.bind(this));
-            window.addEventListener('mouseover', this.onMouseOver.bind(this));
-            window.addEventListener('mouseout', this.onMouseOut.bind(this));
-            window.addEventListener('resize', this.onResize.bind(this));
-
-            if (this.options.scanning.touchInputEnabled) {
-                window.addEventListener('click', this.onClick.bind(this));
-                window.addEventListener('touchstart', this.onTouchStart.bind(this));
-                window.addEventListener('touchend', this.onTouchEnd.bind(this));
-                window.addEventListener('touchcancel', this.onTouchCancel.bind(this));
-                window.addEventListener('touchmove', this.onTouchMove.bind(this), {passive: false});
-                window.addEventListener('contextmenu', this.onContextMenu.bind(this));
-            }
+            await this.updateOptions();
 
             chrome.runtime.onMessage.addListener(this.onRuntimeMessage.bind(this));
         } catch (e) {
@@ -88,7 +75,6 @@ class Frontend {
 
         if (
             this.pendingLookup ||
-            !this.options.general.enable ||
             (e.buttons & 0x1) !== 0x0 // Left mouse button
         ) {
             return;
@@ -145,7 +131,7 @@ class Frontend {
     }
 
     onResize() {
-        this.searchClear(true);
+        this.searchClear(false);
     }
 
     onClick(e) {
@@ -242,16 +228,59 @@ class Frontend {
     }
 
     onError(error) {
-        console.log(error);
+        logError(error, false);
     }
 
-    async updateOptions() {
-        this.options = await apiOptionsGet(this.getOptionsContext());
-        if (!this.options.enable) {
+    setEnabled(enabled) {
+        if (enabled) {
+            if (!this.enabled) {
+                this.hookEvents();
+                this.enabled = true;
+            }
+        } else {
+            if (this.enabled) {
+                this.clearEventListeners();
+                this.enabled = false;
+            }
             this.searchClear(false);
         }
     }
 
+    hookEvents() {
+        this.addEventListener(window, 'message', this.onWindowMessage.bind(this));
+        this.addEventListener(window, 'mousedown', this.onMouseDown.bind(this));
+        this.addEventListener(window, 'mousemove', this.onMouseMove.bind(this));
+        this.addEventListener(window, 'mouseover', this.onMouseOver.bind(this));
+        this.addEventListener(window, 'mouseout', this.onMouseOut.bind(this));
+        this.addEventListener(window, 'resize', this.onResize.bind(this));
+
+        if (this.options.scanning.touchInputEnabled) {
+            this.addEventListener(window, 'click', this.onClick.bind(this));
+            this.addEventListener(window, 'touchstart', this.onTouchStart.bind(this));
+            this.addEventListener(window, 'touchend', this.onTouchEnd.bind(this));
+            this.addEventListener(window, 'touchcancel', this.onTouchCancel.bind(this));
+            this.addEventListener(window, 'touchmove', this.onTouchMove.bind(this), {passive: false});
+            this.addEventListener(window, 'contextmenu', this.onContextMenu.bind(this));
+        }
+    }
+
+    addEventListener(node, type, listener, options) {
+        node.addEventListener(type, listener, options);
+        this.eventListeners.push([node, type, listener, options]);
+    }
+
+    clearEventListeners() {
+        for (const [node, type, listener, options] of this.eventListeners) {
+            node.removeEventListener(type, listener, options);
+        }
+        this.eventListeners = [];
+    }
+
+    async updateOptions() {
+        this.options = await apiOptionsGet(this.getOptionsContext());
+        this.setEnabled(this.options.general.enable);
+    }
+
     popupTimerSet(callback) {
         const delay = this.options.scanning.delay;
         if (delay > 0) {
@@ -452,7 +481,7 @@ class Frontend {
     searchFromTouch(x, y, cause) {
         this.popupTimerClear();
 
-        if (!this.options.general.enable || this.pendingLookup) {
+        if (this.pendingLookup) {
             return;
         }
 
@@ -527,8 +556,8 @@ Frontend.runtimeMessageHandlers = {
         self.updateOptions();
     },
 
-    popupSetVisible: (self, {visible}) => {
-        self.popup.setVisible(visible);
+    popupSetVisibleOverride: (self, {visible}) => {
+        self.popup.setVisibleOverride(visible);
     }
 };
 
diff --git a/ext/fg/js/popup-proxy-host.js b/ext/fg/js/popup-proxy-host.js
index cb9741be..f933639c 100644
--- a/ext/fg/js/popup-proxy-host.js
+++ b/ext/fg/js/popup-proxy-host.js
@@ -41,7 +41,7 @@ class PopupProxyHost {
             show: ({id, elementRect, options}) => this.show(id, elementRect, options),
             showOrphaned: ({id, elementRect, options}) => this.show(id, elementRect, options),
             hide: ({id, changeFocus}) => this.hide(id, changeFocus),
-            setVisible: ({id, visible}) => this.setVisible(id, visible),
+            setVisibleOverride: ({id, visible}) => this.setVisibleOverride(id, visible),
             containsPoint: ({id, x, y}) => this.containsPoint(id, x, y),
             termsShow: ({id, elementRect, writingMode, definitions, options, context}) => this.termsShow(id, elementRect, writingMode, definitions, options, context),
             kanjiShow: ({id, elementRect, writingMode, definitions, options, context}) => this.kanjiShow(id, elementRect, writingMode, definitions, options, context),
@@ -69,7 +69,7 @@ class PopupProxyHost {
 
     getPopup(id) {
         if (!this.popups.hasOwnProperty(id)) {
-            throw 'Invalid popup ID';
+            throw new Error('Invalid popup ID');
         }
 
         return this.popups[id];
@@ -103,9 +103,9 @@ class PopupProxyHost {
         return popup.hide(changeFocus);
     }
 
-    async setVisible(id, visible) {
+    async setVisibleOverride(id, visible) {
         const popup = this.getPopup(id);
-        return popup.setVisible(visible);
+        return popup.setVisibleOverride(visible);
     }
 
     async containsPoint(id, x, y) {
diff --git a/ext/fg/js/popup-proxy.js b/ext/fg/js/popup-proxy.js
index 072cebc9..efbd28b2 100644
--- a/ext/fg/js/popup-proxy.js
+++ b/ext/fg/js/popup-proxy.js
@@ -65,9 +65,9 @@ class PopupProxy {
         return await this.invokeHostApi('hide', {id: this.id, changeFocus});
     }
 
-    async setVisible(visible) {
+    async setVisibleOverride(visible) {
         const id = await this.getPopupId();
-        return await this.invokeHostApi('setVisible', {id, visible});
+        return await this.invokeHostApi('setVisibleOverride', {id, visible});
     }
 
     async containsPoint(x, y) {
@@ -98,7 +98,7 @@ class PopupProxy {
 
     invokeHostApi(action, params={}) {
         if (typeof this.parentFrameId !== 'number') {
-            return Promise.reject('Invalid frame');
+            return Promise.reject(new Error('Invalid frame'));
         }
         return this.apiSender.invoke(action, params, `popup-proxy-host#${this.parentFrameId}`);
     }
diff --git a/ext/fg/js/popup.js b/ext/fg/js/popup.js
index 9dff6f28..9ca91afa 100644
--- a/ext/fg/js/popup.js
+++ b/ext/fg/js/popup.js
@@ -34,6 +34,9 @@ class Popup {
         this.container.style.height = '0px';
         this.injectPromise = null;
         this.isInjected = false;
+        this.visible = false;
+        this.visibleOverride = null;
+        this.updateVisibility();
     }
 
     inject(options) {
@@ -105,9 +108,11 @@ class Popup {
         container.style.top = `${y}px`;
         container.style.width = `${width}px`;
         container.style.height = `${height}px`;
-        container.style.visibility = 'visible';
 
-        this.hideChildren(true);
+        this.setVisible(true);
+        if (this.child !== null) {
+            this.child.hide(true);
+        }
     }
 
     static getPositionForHorizontalText(elementRect, width, height, maxWidth, maxHeight, optionsGeneral) {
@@ -209,41 +214,35 @@ class Popup {
     }
 
     hide(changeFocus) {
-        if (this.isContainerHidden()) {
-            changeFocus = false;
+        if (!this.isVisible()) {
+            return;
+        }
+
+        this.setVisible(false);
+        if (this.child !== null) {
+            this.child.hide(false);
         }
-        this.hideChildren(changeFocus);
-        this.hideContainer();
         if (changeFocus) {
             this.focusParent();
         }
     }
 
-    hideChildren(changeFocus) {
-        // Recursively hides all children.
-        if (this.child !== null && !this.child.isContainerHidden()) {
-            this.child.hide(changeFocus);
-        }
-    }
-
-    hideContainer() {
-        this.container.style.visibility = 'hidden';
+    isVisible() {
+        return this.isInjected && (this.visibleOverride !== null ? this.visibleOverride : this.visible);
     }
 
-    isContainerHidden() {
-        return (this.container.style.visibility === 'hidden');
+    setVisible(visible) {
+        this.visible = visible;
+        this.updateVisibility();
     }
 
-    isVisible() {
-        return this.isInjected && this.container.style.visibility !== 'hidden';
+    setVisibleOverride(visible) {
+        this.visibleOverride = visible;
+        this.updateVisibility();
     }
 
-    setVisible(visible) {
-        if (visible) {
-            this.container.style.setProperty('display', '');
-        } else {
-            this.container.style.setProperty('display', 'none', 'important');
-        }
+    updateVisibility() {
+        this.container.style.setProperty('visibility', this.isVisible() ? 'visible' : 'hidden', 'important');
     }
 
     focusParent() {
diff --git a/ext/fg/js/util.js b/ext/fg/js/util.js
index dc99274e..9a7968a7 100644
--- a/ext/fg/js/util.js
+++ b/ext/fg/js/util.js
@@ -30,19 +30,19 @@ function utilInvoke(action, params={}) {
             chrome.runtime.sendMessage(data, (response) => {
                 utilCheckLastError(chrome.runtime.lastError);
                 if (response !== null && typeof response === 'object') {
-                    if (response.error) {
-                        reject(response.error);
+                    if (typeof response.error !== 'undefined') {
+                        reject(jsonToError(response.error));
                     } else {
                         resolve(response.result);
                     }
                 } else {
                     const message = response === null ? 'Unexpected null response' : `Unexpected response of type ${typeof response}`;
-                    reject(`${message} (${JSON.stringify(data)})`);
+                    reject(new Error(`${message} (${JSON.stringify(data)})`));
                 }
             });
         } catch (e) {
             window.yomichan_orphaned = true;
-            reject(e.message);
+            reject(e);
         }
     });
 }
diff --git a/ext/manifest.json b/ext/manifest.json
index fe6e8e2b..c69b556f 100644
--- a/ext/manifest.json
+++ b/ext/manifest.json
@@ -1,7 +1,7 @@
 {
     "manifest_version": 2,
     "name": "Yomichan (testing)",
-    "version": "1.8.5",
+    "version": "1.8.8",
 
     "description": "Japanese dictionary with Anki integration (testing)",
     "icons": {"16": "mixed/img/icon16.png", "48": "mixed/img/icon48.png", "128": "mixed/img/icon128.png"},
diff --git a/ext/mixed/img/add-kanji.png b/ext/mixed/img/add-kanji.png
deleted file mode 100644
index 6332fefe..00000000
--- a/ext/mixed/img/add-kanji.png
+++ /dev/null
diff --git a/ext/mixed/img/add-term-kana.png b/ext/mixed/img/add-term-kana.png
deleted file mode 100644
index 41ff8335..00000000
--- a/ext/mixed/img/add-term-kana.png
+++ /dev/null
diff --git a/ext/mixed/img/add-term-kana.svg b/ext/mixed/img/add-term-kana.svg
new file mode 100644
index 00000000..bb964476
--- /dev/null
+++ b/ext/mixed/img/add-term-kana.svg
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="16" height="16" version="1.1" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+ <defs>
+  <linearGradient id="linearGradient4719" x1="-1.7198" x2="-1.7198" y1="2.7781" y2="1.4552" gradientTransform="matrix(3.7795 0 0 3.7795 14 .5)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#8dba64" offset="0"/>
+   <stop stop-color="#b4d495" offset="1"/>
+  </linearGradient>
+  <linearGradient id="linearGradient4745-5" x1="2.1167" x2="1.4552" y1="2.3812" y2="1.7198" gradientTransform="scale(3.7795 3.7795)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#376b19" offset="0"/>
+   <stop stop-color="#81ab61" offset="1"/>
+  </linearGradient>
+  <radialGradient id="radialGradient4770-4" cx="2.1167" cy="2.1167" r=".66146" gradientTransform="matrix(2.2677 -7.9311e-7 7.9312e-7 2.2677 2.7 3.7)" gradientUnits="userSpaceOnUse">
+   <stop stop-opacity=".28986" offset="0"/>
+   <stop stop-opacity="0" offset="1"/>
+  </radialGradient>
+ </defs>
+ <g>
+  <circle cx="7.5" cy="8.5" r="3" fill="url(#linearGradient4719)"/>
+  <circle cx="7.5" cy="8.5" r="3" fill="none" stroke="url(#linearGradient4745-5)"/>
+  <circle cx="7.5" cy="8.5" r="1.5" fill="url(#radialGradient4770-4)"/>
+  <path d="m6 8h1v-1h1v1h1v1h-1v1h-1v-1h-1v-1" fill="#fff"/>
+ </g>
+</svg>
diff --git a/ext/mixed/img/add-term-kanji.png b/ext/mixed/img/add-term-kanji.png
deleted file mode 100644
index 6332fefe..00000000
--- a/ext/mixed/img/add-term-kanji.png
+++ /dev/null
diff --git a/ext/mixed/img/add-term-kanji.svg b/ext/mixed/img/add-term-kanji.svg
new file mode 100644
index 00000000..3737eaec
--- /dev/null
+++ b/ext/mixed/img/add-term-kanji.svg
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="16" height="16" version="1.1" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+ <defs>
+  <linearGradient id="linearGradient4582" x1="-1.7198" x2="-1.7198" y1="3.5719" y2=".79375" gradientTransform="matrix(3.7795 0 0 3.7795 14.5 -6.308e-7)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#6fb558" offset="0"/>
+   <stop stop-color="#a5db9b" offset="1"/>
+  </linearGradient>
+  <linearGradient id="linearGradient4758-7" x1="7.5406" x2="5.1594" y1="3.3073" y2=".92604" gradientTransform="matrix(3.7795 0 0 3.7795 -16 -6e-7)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#34812c" offset="0"/>
+   <stop stop-color="#87b870" offset="1"/>
+  </linearGradient>
+  <radialGradient id="radialGradient4683-3" cx="2.1167" cy="2.1167" r=".66146" gradientTransform="matrix(4.5354 8.0301e-7 -8.0301e-7 4.5354 -1.6 -1.6)" gradientUnits="userSpaceOnUse">
+   <stop stop-opacity=".28986" offset="0"/>
+   <stop stop-opacity="0" offset="1"/>
+  </radialGradient>
+ </defs>
+ <g>
+  <circle cx="8" cy="8" r="6.5" fill="url(#linearGradient4582)"/>
+  <circle cx="8" cy="8" r="5.75" fill="none" stroke="#fff" stroke-opacity=".50196" stroke-width="1.5"/>
+  <circle cx="8" cy="8" r="6.5" fill="none" stroke="url(#linearGradient4758-7)"/>
+  <circle cx="8" cy="8" r="3" fill="url(#radialGradient4683-3)"/>
+  <path d="m5 7h2v-2h2v2h2v2h-2v2h-2v-2h-2v-2" fill="#fff"/>
+ </g>
+</svg>
diff --git a/ext/mixed/img/entry-current.png b/ext/mixed/img/entry-current.png
deleted file mode 100644
index bab7cc9b..00000000
--- a/ext/mixed/img/entry-current.png
+++ /dev/null
diff --git a/ext/mixed/img/entry-current.svg b/ext/mixed/img/entry-current.svg
new file mode 100644
index 00000000..abf3f76d
--- /dev/null
+++ b/ext/mixed/img/entry-current.svg
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="16" height="16" version="1.1" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+ <defs>
+  <linearGradient id="linearGradient4930" x1="3.175" x2="1.0583" y1="3.7042" y2=".52917" gradientTransform="scale(3.7795 3.7795)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#c47a00" offset="0"/>
+   <stop stop-color="#fcbf00" offset="1"/>
+  </linearGradient>
+  <radialGradient id="radialGradient4938" cx="2.1167" cy="2.1167" r="1.9976" gradientTransform="matrix(3.7795 0 0 3.7753 -5.7066e-7 .0088978)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#ffeeb5" offset="0"/>
+   <stop stop-color="#ffe079" offset="1"/>
+  </radialGradient>
+ </defs>
+ <g>
+  <path d="m10.25 9.375 3 4.5-2.25 1.5-3-4.5-3 4.5-2.25-1.5 3-4.5h-5.25v-2.75h5.25l-3-4.5 2.25-1.5 3 4.5 3-4.5 2.25 1.5-3 4.5h5.25v2.75z" fill="url(#radialGradient4938)" stroke="url(#linearGradient4930)" stroke-linejoin="bevel" stroke-opacity=".93333"/>
+ </g>
+</svg>
diff --git a/ext/mixed/img/play-audio.png b/ext/mixed/img/play-audio.png
deleted file mode 100644
index 6056d234..00000000
--- a/ext/mixed/img/play-audio.png
+++ /dev/null
diff --git a/ext/mixed/img/play-audio.svg b/ext/mixed/img/play-audio.svg
new file mode 100644
index 00000000..1d5e2d9c
--- /dev/null
+++ b/ext/mixed/img/play-audio.svg
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="16" height="16" version="1.1" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+ <defs>
+  <linearGradient id="linearGradient4825" x1="-.39687" x2="-1.1906" y1="3.2411" y2="1.1906" gradientTransform="matrix(3.7795 0 0 3.7795 8.5 -6.308e-7)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#777772" offset="0"/>
+   <stop stop-color="#a9a9a9" offset="1"/>
+  </linearGradient>
+  <linearGradient id="linearGradient4869-7" x1=".52917" x2=".52917" y1="2.6458" y2="1.4552" gradientTransform="scale(3.7795 3.7795)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#fff" stop-opacity="0" offset="0"/>
+   <stop stop-color="#fff" offset="1"/>
+  </linearGradient>
+  <linearGradient id="linearGradient4853-9" x1="-.26458" x2="-1.5875" y1="3.4396" y2=".7276" gradientTransform="matrix(3.7795 0 0 3.7795 8.5 -2.9535e-7)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#5d5d5a" offset="0"/>
+   <stop stop-color="#90908f" offset="1"/>
+  </linearGradient>
+  <radialGradient id="radialGradient4898-9" cx="15" cy="8.5578" r="3.7188" gradientTransform="matrix(2.4322e-8 -2.1513 1.6807 1.9002e-8 1.3671 40.269)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#e1293b" offset="0"/>
+   <stop stop-color="#e9505a" offset="1"/>
+  </radialGradient>
+ </defs>
+ <g>
+  <path d="m0.5 8v2.5h3.5l3.5 3v-11l-3.5 3h-3.5v2.5" fill="url(#linearGradient4825)"/>
+  <path d="m1.25 10.5v-4.25h3l3-2.75" fill="none" stroke="url(#linearGradient4869-7)" stroke-opacity=".50196" stroke-width="1.5"/>
+  <path d="m0.5 8v2.5h3.5l3.5 3v-11l-3.5 3h-3.5v2.5" fill="none" stroke="url(#linearGradient4853-9)" stroke-linecap="round" stroke-linejoin="round"/>
+  <path d="m12.75 2.75c1.5 3 1.5 7.5 0 10.5 4.25-1.75 4.25-8.75 0-10.5m-2 2c0.75 1.5 0.75 5 0 6.5 3-1.25 3-5.25 0-6.5m-0.75 1.5-1.5 1.75 1.5 1.75c0.5-1 0.5-2.5 0-3.5" fill="url(#radialGradient4898-9)"/>
+ </g>
+</svg>
diff --git a/ext/mixed/img/source-term.png b/ext/mixed/img/source-term.png
deleted file mode 100644
index 2e53c698..00000000
--- a/ext/mixed/img/source-term.png
+++ /dev/null
diff --git a/ext/mixed/img/source-term.svg b/ext/mixed/img/source-term.svg
new file mode 100644
index 00000000..a70938f2
--- /dev/null
+++ b/ext/mixed/img/source-term.svg
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="16" height="16" version="1.1" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+ <defs>
+  <linearGradient id="linearGradient5205" x2="-3.9688" y1="3.7042" y2="1.0583" gradientTransform="matrix(3.7795 0 0 3.7795 20.5 -.5)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#012e5b" offset="0"/>
+   <stop stop-color="#6399c6" offset="1"/>
+  </linearGradient>
+  <linearGradient id="linearGradient5138-3" x1="3.8365" x2=".39687" y1="3.0427" y2=".59531" gradientTransform="matrix(3.7795 0 0 3.7795 5 -6e-7)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#012e5b" offset="0"/>
+   <stop stop-color="#6399c6" offset="1"/>
+  </linearGradient>
+  <linearGradient id="linearGradient5227-0" x1="2.6458" x2=".52917" y1="3.9688" y2="3.3734" gradientTransform="matrix(3.7795 0 0 3.7795 -5.7066e-7 -7)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#7cbe76" offset="0"/>
+   <stop stop-color="#abd8a2" offset="1"/>
+  </linearGradient>
+  <linearGradient id="linearGradient5219-8" x1="2.7781" x2=".13229" y1="4.101" y2="3.175" gradientTransform="matrix(3.7795 0 0 3.7795 -5.7066e-7 -7)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#205e1d" offset="0"/>
+   <stop stop-color="#74c768" offset="1"/>
+  </linearGradient>
+ </defs>
+ <g>
+  <path d="m16 3.5h-1.5l-1 1h-1l-1-1h-6v10h5.75l1 1h1.5l1-1h1.25" fill="#5d8bb3" stroke="url(#linearGradient5205)" stroke-width="1px"/>
+  <path d="m16 2.25h-1.5l-1 1h-1l-1-1h-5v9.25h5l1 1h1l1-1h1.5" fill="#f8f8f8" stroke="url(#linearGradient5138-3)" stroke-width="1px"/>
+  <g fill="none" stroke-width="1px">
+   <path d="m15 8.75h1m-1-2h1m-1-2h1m-8 4h3m-3-2h3m-3-2h3" stroke="#bdbdbd"/>
+   <path d="m12.5 10.25v-4.75" stroke="#a6a6a6"/>
+   <path d="m13.5 5.75v4.25" stroke="#d8d8d8"/>
+  </g>
+  <path d="m10.5 7v-1.5h-7v-2l-3 3v1l3 3v-2h7v-1.5" fill="url(#linearGradient5227-0)" stroke="url(#linearGradient5219-8)" stroke-linejoin="round"/>
+ </g>
+</svg>
diff --git a/ext/mixed/img/view-note.png b/ext/mixed/img/view-note.png
deleted file mode 100644
index 7d863f94..00000000
--- a/ext/mixed/img/view-note.png
+++ /dev/null
diff --git a/ext/mixed/img/view-note.svg b/ext/mixed/img/view-note.svg
new file mode 100644
index 00000000..3e6f1dce
--- /dev/null
+++ b/ext/mixed/img/view-note.svg
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="16" height="16" version="1.1" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+ <defs>
+  <linearGradient id="linearGradient5010" x2="-3.9688" y1="3.7042" y2="1.0583" gradientTransform="matrix(3.7795 0 0 3.7795 15.5 -.5)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#012e5b" offset="0"/>
+   <stop stop-color="#6399c6" offset="1"/>
+  </linearGradient>
+  <linearGradient id="linearGradient5018-3" x1="3.8365" x2=".39687" y1="3.0427" y2=".59531" gradientTransform="scale(3.7795 3.7795)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#012e5b" offset="0"/>
+   <stop stop-color="#6399c6" offset="1"/>
+  </linearGradient>
+ </defs>
+ <g stroke-width="1px">
+  <path d="m9.75 13.5-1 1h-1.5l-1-1h-5.75v-10h6l1 1h1l1-1h6v10z" fill="#5d8bb3" stroke="url(#linearGradient5010)"/>
+  <path d="m14.5 11.5h-5l-1 1h-1l-1-1h-5v-9.25h5l1 1h1l1-1h5v9.25" fill="#f8f8f8" stroke="url(#linearGradient5018-3)"/>
+  <g fill="none">
+   <path d="m10 8.75h3m-3-2h3m-3-2h3m-10 4h3m-3-2h3m-3-2h3" stroke="#bdbdbd"/>
+   <path d="m7.5 10.25v-4.75" stroke="#a6a6a6"/>
+   <path d="m8.5 5.75v4.25" stroke="#d8d8d8"/>
+  </g>
+ </g>
+</svg>
diff --git a/ext/mixed/js/audio.js b/ext/mixed/js/audio.js
new file mode 100644
index 00000000..b905140c
--- /dev/null
+++ b/ext/mixed/js/audio.js
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2019  Alex Yatskov <alex@foosoft.net>
+ * Author: Alex Yatskov <alex@foosoft.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+function audioGetFromUrl(url) {
+    return new Promise((resolve, reject) => {
+        const audio = new Audio(url);
+        audio.addEventListener('loadeddata', () => {
+            if (audio.duration === 5.694694 || audio.duration === 5.720718) {
+                // Hardcoded values for invalid audio
+                reject(new Error('Could not retrieve audio'));
+            } else {
+                resolve(audio);
+            }
+        });
+        audio.addEventListener('error', () => reject(audio.error));
+    });
+}
+
+async function audioGetFromSources(expression, sources, optionsContext, createAudioObject, cache=null) {
+    const key = `${expression.expression}:${expression.reading}`;
+    if (cache !== null && cache.hasOwnProperty(expression)) {
+        return cache[key];
+    }
+
+    for (let i = 0, ii = sources.length; i < ii; ++i) {
+        const source = sources[i];
+        const url = await apiAudioGetUrl(expression, source, optionsContext);
+        if (url === null) {
+            continue;
+        }
+
+        try {
+            const audio = createAudioObject ? await audioGetFromUrl(url) : null;
+            const result = {audio, url, source};
+            if (cache !== null) {
+                cache[key] = result;
+            }
+            return result;
+        } catch (e) {
+            // NOP
+        }
+    }
+    return {audio: null, source: null};
+}
diff --git a/ext/mixed/js/display.js b/ext/mixed/js/display.js
index dc64dbea..22181301 100644
--- a/ext/mixed/js/display.js
+++ b/ext/mixed/js/display.js
@@ -26,6 +26,8 @@ class Display {
         this.context = null;
         this.sequence = 0;
         this.index = 0;
+        this.audioPlaying = null;
+        this.audioFallback = null;
         this.audioCache = {};
         this.optionsContext = {};
         this.eventListeners = [];
@@ -39,11 +41,11 @@ class Display {
     }
 
     onError(error) {
-        throw 'Override me';
+        throw new Error('Override me');
     }
 
     onSearchClear() {
-        throw 'Override me';
+        throw new Error('Override me');
     }
 
     onSourceTermView(e) {
@@ -133,7 +135,7 @@ class Display {
         const entry = link.closest('.entry');
         const definitionIndex = this.entryIndexFind(entry);
         const expressionIndex = Display.indexOf(entry.querySelectorAll('.expression .action-play-audio'), link);
-        this.audioPlay(this.definitions[definitionIndex], expressionIndex);
+        this.audioPlay(this.definitions[definitionIndex], expressionIndex, definitionIndex);
     }
 
     onNoteAdd(e) {
@@ -189,7 +191,7 @@ class Display {
                 addable: options.anki.enable,
                 grouped: options.general.resultOutputMode === 'group',
                 merged: options.general.resultOutputMode === 'merge',
-                playback: options.general.audioSource !== 'disabled',
+                playback: options.audio.enabled,
                 compactGlossaries: options.general.compactGlossaries,
                 debug: options.general.debugInfo
             };
@@ -209,7 +211,7 @@ class Display {
             const {index, scroll} = context || {};
             this.entryScrollIntoView(index || 0, scroll);
 
-            if (this.options.general.autoPlayAudio && this.options.general.audioSource !== 'disabled') {
+            if (this.options.audio.enabled && this.options.audio.autoPlay) {
                 this.autoPlayAudio();
             }
 
@@ -274,7 +276,7 @@ class Display {
     }
 
     autoPlayAudio() {
-        this.audioPlay(this.definitions[0], this.firstExpressionIndex);
+        this.audioPlay(this.definitions[0], this.firstExpressionIndex, 0);
     }
 
     async adderButtonUpdate(modes, sequence) {
@@ -286,15 +288,23 @@ class Display {
 
             for (let i = 0; i < states.length; ++i) {
                 const state = states[i];
+                let noteId = null;
                 for (const mode in state) {
                     const button = this.adderButtonFind(i, mode);
                     if (button === null) {
                         continue;
                     }
 
-                    button.classList.toggle('disabled', !state[mode]);
+                    const info = state[mode];
+                    if (!info.canAdd && noteId === null && info.noteId) {
+                        noteId = info.noteId;
+                    }
+                    button.classList.toggle('disabled', !info.canAdd);
                     button.classList.remove('pending');
                 }
+                if (noteId !== null) {
+                    this.viewerButtonShow(i, noteId);
+                }
             }
         } catch (e) {
             this.onError(e);
@@ -380,13 +390,9 @@ class Display {
                 if (adderButton !== null) {
                     adderButton.classList.add('disabled');
                 }
-                const viewerButton = this.viewerButtonFind(index);
-                if (viewerButton !== null) {
-                    viewerButton.classList.remove('pending', 'disabled');
-                    viewerButton.dataset.noteId = noteId;
-                }
+                this.viewerButtonShow(index, noteId);
             } else {
-                throw 'Note could note be added';
+                throw new Error('Note could not be added');
             }
         } catch (e) {
             this.onError(e);
@@ -395,37 +401,44 @@ class Display {
         }
     }
 
-    async audioPlay(definition, expressionIndex) {
+    async audioPlay(definition, expressionIndex, entryIndex) {
         try {
             this.setSpinnerVisible(true);
 
             const expression = expressionIndex === -1 ? definition : definition.expressions[expressionIndex];
-            let url = await apiAudioGetUrl(expression, this.options.general.audioSource);
-            if (!url) {
-                url = '/mixed/mp3/button.mp3';
-            }
 
-            for (const key in this.audioCache) {
-                this.audioCache[key].pause();
+            if (this.audioPlaying !== null) {
+                this.audioPlaying.pause();
+                this.audioPlaying = null;
             }
 
-            let audio = this.audioCache[url];
-            if (audio) {
-                audio.currentTime = 0;
-                audio.volume = this.options.general.audioVolume / 100.0;
-                audio.play();
+            const sources = this.options.audio.sources;
+            let {audio, source} = await audioGetFromSources(expression, sources, this.optionsContext, true, this.audioCache);
+            let info;
+            if (audio === null) {
+                if (this.audioFallback === null) {
+                    this.audioFallback = new Audio('/mixed/mp3/button.mp3');
+                }
+                audio = this.audioFallback;
+                info = 'Could not find audio';
             } else {
-                audio = new Audio(url);
-                audio.onloadeddata = () => {
-                    if (audio.duration === 5.694694 || audio.duration === 5.720718) {
-                        audio = new Audio('/mixed/mp3/button.mp3');
-                    }
+                info = `From source ${1 + sources.indexOf(source)}: ${source}`;
+            }
 
-                    this.audioCache[url] = audio;
-                    audio.volume = this.options.general.audioVolume / 100.0;
-                    audio.play();
-                };
+            const button = this.audioButtonFindImage(entryIndex);
+            if (button !== null) {
+                let titleDefault = button.dataset.titleDefault;
+                if (!titleDefault) {
+                    titleDefault = button.title || "";
+                    button.dataset.titleDefault = titleDefault;
+                }
+                button.title = `${titleDefault}\n${info}`;
             }
+
+            this.audioPlaying = audio;
+            audio.currentTime = 0;
+            audio.volume = this.options.audio.volume / 100.0;
+            audio.play();
         } catch (e) {
             this.onError(e);
         } finally {
@@ -445,7 +458,7 @@ class Display {
 
     async getScreenshot() {
         try {
-            await this.setPopupVisible(false);
+            await this.setPopupVisibleOverride(false);
             await Display.delay(1); // Wait for popup to be hidden.
 
             const {format, quality} = this.options.anki.screenshot;
@@ -454,7 +467,7 @@ class Display {
 
             return {dataUrl, format};
         } finally {
-            await this.setPopupVisible(true);
+            await this.setPopupVisibleOverride(null);
         }
     }
 
@@ -462,8 +475,8 @@ class Display {
         return this.options.general.resultOutputMode === 'merge' ? 0 : -1;
     }
 
-    setPopupVisible(visible) {
-        return apiForward('popupSetVisible', {visible});
+    setPopupVisibleOverride(visible) {
+        return apiForward('popupSetVisibleOverride', {visible});
     }
 
     setSpinnerVisible(visible) {
@@ -504,6 +517,20 @@ class Display {
         return entry !== null ? entry.querySelector('.action-view-note') : null;
     }
 
+    viewerButtonShow(index, noteId) {
+        const viewerButton = this.viewerButtonFind(index);
+        if (viewerButton === null) {
+            return;
+        }
+        viewerButton.classList.remove('pending', 'disabled');
+        viewerButton.dataset.noteId = noteId;
+    }
+
+    audioButtonFindImage(index) {
+        const entry = this.getEntry(index);
+        return entry !== null ? entry.querySelector('.action-play-audio>img') : null;
+    }
+
     static delay(time) {
         return new Promise((resolve) => setTimeout(resolve, time));
     }
@@ -539,7 +566,7 @@ class Display {
 
     static getKeyFromEvent(event) {
         const key = event.key;
-        return key.length === 1 ? key.toUpperCase() : key;
+        return (typeof key === 'string' ? (key.length === 1 ? key.toUpperCase() : key) : '');
     }
 }
 
@@ -633,7 +660,7 @@ Display.onKeyDownHandlers = {
         if (e.altKey) {
             const entry = self.getEntry(self.index);
             if (entry !== null && entry.dataset.type === 'term') {
-                self.audioPlay(self.definitions[self.index], self.firstExpressionIndex);
+                self.audioPlay(self.definitions[self.index], self.firstExpressionIndex, self.index);
             }
             return true;
         }
diff --git a/ext/mixed/js/extension.js b/ext/mixed/js/extension.js
index 5c803132..861e52a5 100644
--- a/ext/mixed/js/extension.js
+++ b/ext/mixed/js/extension.js
@@ -34,7 +34,7 @@ function toIterable(value) {
         }
     }
 
-    throw 'Could not convert to iterable';
+    throw new Error('Could not convert to iterable');
 }
 
 function extensionHasChrome() {
@@ -53,6 +53,39 @@ function extensionHasBrowser() {
     }
 }
 
+function errorToJson(error) {
+    return {
+        name: error.name,
+        message: error.message,
+        stack: error.stack
+    };
+}
+
+function jsonToError(jsonError) {
+    const error = new Error(jsonError.message);
+    error.name = jsonError.name;
+    error.stack = jsonError.stack;
+    return error;
+}
+
+function logError(error, alert) {
+    const manifest = chrome.runtime.getManifest();
+    let errorMessage = `${manifest.name} v${manifest.version} has encountered an error.\n`;
+    errorMessage += `Originating URL: ${window.location.href}\n`;
+
+    const errorString = `${error.toString ? error.toString() : error}`;
+    const stack = `${error.stack}`.trimRight();
+    errorMessage += (!stack.startsWith(errorString) ? `${errorString}\n${stack}` : `${stack}`);
+
+    errorMessage += '\n\nIssues can be reported at https://github.com/FooSoft/yomichan/issues';
+
+    console.error(errorMessage);
+
+    if (alert) {
+        window.alert(`${errorString}\n\nCheck the developer console for more details.`);
+    }
+}
+
 const EXTENSION_IS_BROWSER_EDGE = (
     extensionHasBrowser() &&
     (!extensionHasChrome() || (typeof chrome.runtime === 'undefined' && typeof browser.runtime !== 'undefined'))
diff --git a/resources/icons.svg b/resources/icons.svg
new file mode 100644
index 00000000..4bc46c02
--- /dev/null
+++ b/resources/icons.svg
@@ -0,0 +1,892 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="16"
+   height="16"
+   viewBox="0 0 16 16"
+   version="1.1"
+   id="svg8"
+   inkscape:version="0.92.3 (2405546, 2018-03-11)"
+   sodipodi:docname="icons.svg"
+   inkscape:export-xdpi="96"
+   inkscape:export-ydpi="96">
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="31.678384"
+     inkscape:cx="4.6828273"
+     inkscape:cy="7.5629224"
+     inkscape:document-units="px"
+     inkscape:current-layer="layer16"
+     showgrid="true"
+     units="px"
+     inkscape:snap-center="true"
+     inkscape:window-width="1920"
+     inkscape:window-height="1018"
+     inkscape:window-x="-8"
+     inkscape:window-y="-8"
+     inkscape:window-maximized="1"
+     viewbox-height="16">
+    <inkscape:grid
+       dotted="false"
+       spacingy="0.25"
+       spacingx="0.25"
+       empspacing="8"
+       id="grid815"
+       type="xygrid" />
+  </sodipodi:namedview>
+  <defs
+     id="defs2">
+    <linearGradient
+       id="linearGradient5225"
+       inkscape:collect="always">
+      <stop
+         id="stop5221"
+         offset="0"
+         style="stop-color:#7cbe76;stop-opacity:1" />
+      <stop
+         id="stop5223"
+         offset="1"
+         style="stop-color:#abd8a2;stop-opacity:1" />
+    </linearGradient>
+    <linearGradient
+       id="linearGradient5217"
+       inkscape:collect="always">
+      <stop
+         id="stop5213"
+         offset="0"
+         style="stop-color:#205e1d;stop-opacity:1" />
+      <stop
+         id="stop5215"
+         offset="1"
+         style="stop-color:#74c768;stop-opacity:1" />
+    </linearGradient>
+    <linearGradient
+       id="linearGradient5016"
+       inkscape:collect="always">
+      <stop
+         id="stop5012"
+         offset="0"
+         style="stop-color:#012e5b;stop-opacity:1" />
+      <stop
+         id="stop5014"
+         offset="1"
+         style="stop-color:#6399c6;stop-opacity:1" />
+    </linearGradient>
+    <linearGradient
+       id="linearGradient5008"
+       inkscape:collect="always">
+      <stop
+         id="stop5004"
+         offset="0"
+         style="stop-color:#012e5b;stop-opacity:1" />
+      <stop
+         id="stop5006"
+         offset="1"
+         style="stop-color:#6399c6;stop-opacity:1" />
+    </linearGradient>
+    <linearGradient
+       id="linearGradient4957"
+       inkscape:collect="always">
+      <stop
+         id="stop4953"
+         offset="0"
+         style="stop-color:#000000;stop-opacity:1;" />
+      <stop
+         id="stop4955"
+         offset="1"
+         style="stop-color:#000000;stop-opacity:0;" />
+    </linearGradient>
+    <linearGradient
+       id="linearGradient4936"
+       inkscape:collect="always">
+      <stop
+         id="stop4932"
+         offset="0"
+         style="stop-color:#ffeeb5;stop-opacity:1" />
+      <stop
+         id="stop4934"
+         offset="1"
+         style="stop-color:#ffe079;stop-opacity:1" />
+    </linearGradient>
+    <linearGradient
+       id="linearGradient4928"
+       inkscape:collect="always">
+      <stop
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diff --git a/tmpl/kanji.html b/tmpl/kanji.html
index a4bd95ee..0888d141 100644
--- a/tmpl/kanji.html
+++ b/tmpl/kanji.html
@@ -17,13 +17,13 @@ No data found
 <div class="entry" data-type="kanji">
     <div class="actions">
         {{#if addable}}
-        <a href="#" class="action-view-note pending disabled"><img src="/mixed/img/view-note.png" title="View added note (Alt + V)" alt></a>
-        <a href="#" class="action-add-note pending disabled" data-mode="kanji"><img src="/mixed/img/add-kanji.png" title="Add Kanji (Alt + K)" alt></a>
+        <a href="#" class="action-view-note pending disabled"><img src="/mixed/img/view-note.svg" title="View added note (Alt + V)" alt></a>
+        <a href="#" class="action-add-note pending disabled" data-mode="kanji"><img src="/mixed/img/add-term-kanji.svg" title="Add Kanji (Alt + K)" alt></a>
         {{/if}}
         {{#if source}}
-        <a href="#" class="source-term"><img src="/mixed/img/source-term.png" title="Source term (Alt + B)" alt></a>
+        <a href="#" class="source-term"><img src="/mixed/img/source-term.svg" title="Source term (Alt + B)" alt></a>
         {{/if}}
-        <img src="/mixed/img/entry-current.png" class="current" title="Current entry (Alt + Up/Down/Home/End/PgUp/PgDn)" alt>
+        <img src="/mixed/img/entry-current.svg" class="current" title="Current entry (Alt + Up/Down/Home/End/PgUp/PgDn)" alt>
     </div>
 
     <div class="glyph">{{character}}</div>
diff --git a/tmpl/terms.html b/tmpl/terms.html
index b9e5e0ad..0b967bb5 100644
--- a/tmpl/terms.html
+++ b/tmpl/terms.html
@@ -30,26 +30,26 @@
 <div class="entry" data-type="term">
     <div class="actions">
         {{#if addable}}
-        <a href="#" class="action-view-note pending disabled"><img src="/mixed/img/view-note.png" title="View added note (Alt + V)" alt></a>
-        <a href="#" class="action-add-note pending disabled" data-mode="term-kanji"><img src="/mixed/img/add-term-kanji.png" title="Add expression (Alt + E)" alt></a>
-        <a href="#" class="action-add-note pending disabled" data-mode="term-kana"><img src="/mixed/img/add-term-kana.png" title="Add reading (Alt + R)" alt></a>
+        <a href="#" class="action-view-note pending disabled"><img src="/mixed/img/view-note.svg" title="View added note (Alt + V)" alt></a>
+        <a href="#" class="action-add-note pending disabled" data-mode="term-kanji"><img src="/mixed/img/add-term-kanji.svg" title="Add expression (Alt + E)" alt></a>
+        <a href="#" class="action-add-note pending disabled" data-mode="term-kana"><img src="/mixed/img/add-term-kana.svg" title="Add reading (Alt + R)" alt></a>
         {{/if}}
         {{#unless merged}}
         {{#if playback}}
-        <a href="#" class="action-play-audio"><img src="/mixed/img/play-audio.png" title="Play audio (Alt + P)" alt></a>
+        <a href="#" class="action-play-audio"><img src="/mixed/img/play-audio.svg" title="Play audio (Alt + P)" alt></a>
         {{/if}}
         {{/unless}}
         {{#if source}}
-        <a href="#" class="source-term"><img src="/mixed/img/source-term.png" title="Source term (Alt + B)" alt></a>
+        <a href="#" class="source-term"><img src="/mixed/img/source-term.svg" title="Source term (Alt + B)" alt></a>
         {{/if}}
-        <img src="/mixed/img/entry-current.png" class="current" title="Current entry (Alt + Up/Down/Home/End/PgUp/PgDn)" alt>
+        <img src="/mixed/img/entry-current.svg" class="current" title="Current entry (Alt + Up/Down/Home/End/PgUp/PgDn)" alt>
     </div>
 
     {{#if merged}}
     {{~#each expressions~}}
     <div class="expression"><span class="expression-{{termFrequency}}">{{#kanjiLinks}}{{#furigana}}{{{.}}}{{/furigana}}{{/kanjiLinks}}</span><div class="peek-wrapper">
             {{~#if ../playback~}}
-            <a href="#" class="action-play-audio"><img src="/mixed/img/play-audio.png" title="Play audio" alt></a>
+            <a href="#" class="action-play-audio"><img src="/mixed/img/play-audio.svg" title="Play audio" alt></a>
             {{~/if~}}
             {{~#if termTags~}}
             <div class="tags">