diff --git a/ext/bg/js/ankiweb.js b/ext/bg/js/ankiweb.js
deleted file mode 100644
index 69a1b44d..00000000
--- a/ext/bg/js/ankiweb.js
+++ /dev/null
@@ -1,180 +0,0 @@
-/*
- * Copyright (C) 2016  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 AnkiWeb {
-    constructor(username, password) {
-        this.username = username;
-        this.password = password;
-        this.noteInfo = null;
-
-        chrome.webRequest.onBeforeSendHeaders.addListener(
-            details => {
-                details.requestHeaders.push({name: 'Origin', value: 'https://ankiweb.net'});
-                return {requestHeaders: details.requestHeaders};
-            },
-            {urls: ['https://ankiweb.net/*']},
-            ['blocking', 'requestHeaders']
-        );
-    }
-
-    addNote(note) {
-        return this.retrieve().then(info => {
-            const model = info.models.find(m => m.name === note.modelName);
-            if (!model) {
-                return Promise.reject('cannot add note model provided');
-            }
-
-            const fields = [];
-            for (const field of model.fields) {
-                fields.push(note.fields[field]);
-            }
-
-            const data = {
-                data: JSON.stringify([fields, note.tags.join(' ')]),
-                mid: model.id,
-                deck: note.deckName,
-                csrf_token: info.token
-            };
-
-            return AnkiWeb.loadAccountPage('https://ankiweb.net/edit/save', data, this.username, this.password);
-        }).then(response => response !== '0');
-    }
-
-    canAddNotes(notes) {
-        return Promise.resolve(new Array(notes.length).fill(true));
-    }
-
-    getDeckNames() {
-        return this.retrieve().then(info => info.deckNames);
-    }
-
-    getModelNames() {
-        return this.retrieve().then(info => info.models.map(m => m.name));
-    }
-
-    getModelFieldNames(modelName) {
-        return this.retrieve().then(info => {
-            const model = info.models.find(m => m.name === modelName);
-            return model ? model.fields : [];
-        });
-    }
-
-    retrieve() {
-        if (this.noteInfo !== null) {
-            return Promise.resolve(this.noteInfo);
-        }
-
-        return AnkiWeb.scrape(this.username, this.password).then(({deckNames, models, token}) => {
-            this.noteInfo = {deckNames, models, token};
-            return this.noteInfo;
-        });
-    }
-
-    logout() {
-        return AnkiWeb.loadPage('https://ankiweb.net/account/logout', null);
-    }
-
-    static scrape(username, password) {
-        return AnkiWeb.loadAccountPage('https://ankiweb.net/edit/', null, username, password).then(response => {
-            const modelsMatch = /editor\.models = (.*}]);/.exec(response);
-            if (modelsMatch === null) {
-                return Promise.reject('failed to scrape model data');
-            }
-
-            const decksMatch = /editor\.decks = (.*}});/.exec(response);
-            if (decksMatch === null) {
-                return Promise.reject('failed to scrape deck data');
-            }
-
-            const tokenMatch = /editor\.csrf_token = \'(.*)\';/.exec(response);
-            if (tokenMatch === null) {
-                return Promise.reject('failed to acquire csrf_token');
-            }
-
-            const modelsJson = JSON.parse(modelsMatch[1]);
-            const decksJson = JSON.parse(decksMatch[1]);
-            const token = tokenMatch[1];
-
-            const deckNames = Object.keys(decksJson).map(d => decksJson[d].name);
-            const models = [];
-            for (const modelJson of modelsJson) {
-                models.push({
-                    name: modelJson.name,
-                    id: modelJson.id,
-                    fields: modelJson.flds.map(f => f.name)
-                });
-            }
-
-            return {deckNames, models, token};
-        });
-    }
-
-    static login(username, password, token) {
-        if (username.length === 0 || password.length === 0) {
-            return Promise.reject('login credentials not specified');
-        }
-
-        const data = {username, password, csrf_token: token, submitted: 1};
-        return AnkiWeb.loadPage('https://ankiweb.net/account/login', data).then(response => {
-            if (!response.includes('class="mitem"')) {
-                return Promise.reject('failed to authenticate');
-            }
-        });
-    }
-
-    static loadAccountPage(url, data, username, password) {
-        return AnkiWeb.loadPage(url, data).then(response => {
-            if (response.includes('name="password"')) {
-                const tokenMatch = /name="csrf_token" value="(.*)"/.exec(response);
-                if (tokenMatch === null) {
-                    return Promise.reject('failed to acquire csrf_token');
-                }
-
-                return AnkiWeb.login(username, password, tokenMatch[1]).then(() => AnkiWeb.loadPage(url, data));
-            } else {
-                return response;
-            }
-        });
-    }
-
-    static loadPage(url, data) {
-        return new Promise((resolve, reject) => {
-            let dataEnc = null;
-            if (data) {
-                const params = [];
-                for (const key in data) {
-                    params.push(`${encodeURIComponent(key)}=${encodeURIComponent(data[key])}`);
-                }
-
-                dataEnc = params.join('&');
-            }
-
-            const xhr = new XMLHttpRequest();
-            xhr.addEventListener('error', () => reject('failed to execute network request'));
-            xhr.addEventListener('load', () => resolve(xhr.responseText));
-            if (dataEnc) {
-                xhr.open('POST', url);
-                xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
-                xhr.send(dataEnc);
-            } else {
-                xhr.open('GET', url);
-                xhr.send();
-            }
-        });
-    }
-}