diff --git a/ext/bg/background.html b/ext/bg/background.html
index 5a6970c3..11838d14 100644
--- a/ext/bg/background.html
+++ b/ext/bg/background.html
@@ -20,10 +20,10 @@
 
         <script src="/mixed/js/core.js"></script>
         <script src="/mixed/js/dom.js"></script>
+        <script src="/mixed/js/api.js"></script>
 
         <script src="/bg/js/anki.js"></script>
         <script src="/bg/js/mecab.js"></script>
-        <script src="/bg/js/api.js"></script>
         <script src="/bg/js/audio.js"></script>
         <script src="/bg/js/backend-api-forwarder.js"></script>
         <script src="/bg/js/conditions.js"></script>
diff --git a/ext/bg/context.html b/ext/bg/context.html
index eda09a68..0e50ed7c 100644
--- a/ext/bg/context.html
+++ b/ext/bg/context.html
@@ -180,8 +180,8 @@
 
         <script src="/mixed/js/core.js"></script>
         <script src="/mixed/js/dom.js"></script>
+        <script src="/mixed/js/api.js"></script>
 
-        <script src="/bg/js/api.js"></script>
         <script src="/bg/js/options.js"></script>
         <script src="/bg/js/util.js"></script>
 
diff --git a/ext/bg/js/api.js b/ext/bg/js/api.js
deleted file mode 100644
index 095734fb..00000000
--- a/ext/bg/js/api.js
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * Copyright (C) 2016-2017  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 apiOptionsGet(optionsContext) {
-    return utilBackend()._onApiOptionsGet({optionsContext});
-}
-
-function apiOptionsSet(changedOptions, optionsContext, source) {
-    return utilBackend()._onApiOptionsSet({changedOptions, optionsContext, source});
-}
-
-function apiOptionsGetFull() {
-    return utilBackend()._onApiOptionsGetFull();
-}
-
-function apiOptionsSave(source) {
-    return utilBackend()._onApiOptionsSave({source});
-}
-
-function apiTermsFind(text, details, optionsContext) {
-    return utilBackend()._onApiTermsFind({text, details, optionsContext});
-}
-
-function apiTextParse(text, optionsContext) {
-    return utilBackend()._onApiTextParse({text, optionsContext});
-}
-
-function apiTextParseMecab(text, optionsContext) {
-    return utilBackend()._onApiTextParseMecab({text, optionsContext});
-}
-
-function apiKanjiFind(text, optionsContext) {
-    return utilBackend()._onApiKanjiFind({text, optionsContext});
-}
-
-function apiDefinitionAdd(definition, mode, context, optionsContext) {
-    return utilBackend()._onApiDefinitionAdd({definition, mode, context, optionsContext});
-}
-
-function apiDefinitionsAddable(definitions, modes, optionsContext) {
-    return utilBackend()._onApiDefinitionsAddable({definitions, modes, optionsContext});
-}
-
-function apiNoteView(noteId) {
-    return utilBackend()._onApiNoteView({noteId});
-}
-
-function apiTemplateRender(template, data, dynamic) {
-    return utilBackend()._onApiTemplateRender({template, data, dynamic});
-}
-
-function apiCommandExec(command, params) {
-    return utilBackend()._onApiCommandExec({command, params});
-}
-
-function apiAudioGetUrl(definition, source, optionsContext) {
-    return utilBackend()._onApiAudioGetUrl({definition, source, optionsContext});
-}
-
-function apiScreenshotGet(options, sender) {
-    return utilBackend()._onApiScreenshotGet({options}, sender);
-}
-
-function apiForward(action, params, sender) {
-    return utilBackend()._onApiForward({action, params}, sender);
-}
-
-function apiFrameInformationGet(sender) {
-    return utilBackend()._onApiFrameInformationGet(null, sender);
-}
-
-function apiInjectStylesheet(css, sender) {
-    return utilBackend()._onApiInjectStylesheet({css}, sender);
-}
-
-function apiGetEnvironmentInfo() {
-    return utilBackend()._onApiGetEnvironmentInfo();
-}
-
-function apiClipboardGet() {
-    return utilBackend()._onApiClipboardGet();
-}
diff --git a/ext/bg/search.html b/ext/bg/search.html
index 7b4616da..409243dd 100644
--- a/ext/bg/search.html
+++ b/ext/bg/search.html
@@ -62,11 +62,11 @@
 
         <script src="/mixed/js/core.js"></script>
         <script src="/mixed/js/dom.js"></script>
+        <script src="/mixed/js/api.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="/fg/js/api.js"></script>
         <script src="/fg/js/document.js"></script>
         <script src="/fg/js/source.js"></script>
         <script src="/mixed/js/audio.js"></script>
diff --git a/ext/bg/settings-popup-preview.html b/ext/bg/settings-popup-preview.html
index 9b92b4e2..f33ecedf 100644
--- a/ext/bg/settings-popup-preview.html
+++ b/ext/bg/settings-popup-preview.html
@@ -119,9 +119,9 @@
 
         <script src="/mixed/js/core.js"></script>
         <script src="/mixed/js/dom.js"></script>
+        <script src="/mixed/js/api.js"></script>
         <script src="/mixed/js/text-scanner.js"></script>
 
-        <script src="/fg/js/api.js"></script>
         <script src="/fg/js/document.js"></script>
         <script src="/fg/js/frontend-api-receiver.js"></script>
         <script src="/fg/js/popup.js"></script>
diff --git a/ext/bg/settings.html b/ext/bg/settings.html
index ea34b208..a3d8cb0c 100644
--- a/ext/bg/settings.html
+++ b/ext/bg/settings.html
@@ -881,10 +881,10 @@
 
         <script src="/mixed/js/core.js"></script>
         <script src="/mixed/js/dom.js"></script>
+        <script src="/mixed/js/api.js"></script>
         <script src="/mixed/js/japanese.js"></script>
 
         <script src="/bg/js/anki.js"></script>
-        <script src="/bg/js/api.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 67ee50b4..886e5e8b 100644
--- a/ext/fg/float.html
+++ b/ext/fg/float.html
@@ -33,8 +33,8 @@
 
         <script src="/mixed/js/core.js"></script>
         <script src="/mixed/js/dom.js"></script>
+        <script src="/mixed/js/api.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="/mixed/js/audio.js"></script>
diff --git a/ext/manifest.json b/ext/manifest.json
index 225ca441..1e819328 100644
--- a/ext/manifest.json
+++ b/ext/manifest.json
@@ -20,8 +20,8 @@
         "js": [
             "mixed/js/core.js",
             "mixed/js/dom.js",
+            "mixed/js/api.js",
             "mixed/js/text-scanner.js",
-            "fg/js/api.js",
             "fg/js/document.js",
             "fg/js/frontend-api-receiver.js",
             "fg/js/popup.js",
diff --git a/ext/fg/js/api.js b/ext/mixed/js/api.js
similarity index 100%
rename from ext/fg/js/api.js
rename to ext/mixed/js/api.js