Dark Reader
すべてのウェブサイトにダークテーマを適用します。夜間や毎日のブラウジングにDark Readerを使用し、あなたの目を気遣います。
1,155,869 人のユーザー
AdGuard AdBlocker
AdGuardは、広告やポップアップ対処には比類のない広告ブロック拡張機能です。Facebook、YouTubeやその他のサイトで広告をブロックします。
1,053,501 人のユーザー
YouTube High Definition
YouTube High Definition is a powerful tool that automatically plays all YouTube videos in HD, changes video player size, offers auto-stop and mute, and much more.
162,253 人のユーザー
Google Search Fixer
Override the user-agent string presented to Google Search pages to receive the search experience shown to Chrome.
126,585 人のユーザー
LeechBlock NG
LeechBlock NG is a simple productivity tool designed to block those time-wasting sites that can suck the life out of your working day. All you need to do is specify which sites to block and when to block them.
68,301 人のユーザー
Tomato Clock
Tomato Clock is a simple browser extension that helps with online time management.
35,734 人のユーザー
SoundFixer
Helps you fix annoying sound problems on sites like YouTube: audio in one channel only, too quiet or too loud. (Unfortunately, this extension does not work on all websites because of cross-domain issues — but it does work on YouTube!)
35,318 人のユーザー
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
683,436 人のユーザー
I don't care about cookies
Get rid of cookie warnings from almost all websites!
311,526 人のユーザー
Greasemonkey
Customize the way a web page displays or behaves, by using small bits of JavaScript.
192,512 人のユーザー
Absolute Enable Right Click & Copy
Force Enable Right Click & Copy
88,878 人のユーザー
User-Agent Switcher
Easily override the browser's User-Agent string
63,234 人のユーザー
Cookie Quick Manager
An addon to manage cookies (view, search, create, edit, remove, backup, restore, protect from deletion and much more). Firefox 57+ is supported.
62,271 人のユーザー
Popup Blocker Ultimate
Best Pop-up Blocker for Firefox. (Best in Rating, Performance, This addon does NOT collect user's data same as Poper Blocker)If your Firefox version is not 57+ please install version 8.1 from Official website.
61,208 人のユーザー
YouTube™のための自分好み
YouTube™の拡張のための普及自分好みに: YouTube™のから動画広告を削除します。
48,411 人のユーザー
Mate Translate – translator, dictionary
Your all-in-one translator for web pages, highlighted text & Netflix subtitles. Translate and learn words in 103 languages.
33,775 人のユーザー
RESTClient, a debugger for RESTful web services.
RESTClient has been completely rewritten for compatible with Firefox 57. Some functions are still missing (OAuth & OAuth 2.0 authentication).
32,061 人のユーザー
uBlacklist
指定したサイトが Google の検索結果で表示されないようにします
31,580 人のユーザー
Youtube Audio
Stream just the audio from YouTube to save bandwidth and battery life
30,338 人のユーザー
h264ify
Makes YouTube stream H.264 videos instead of VP8/VP9 videos
25,870 人のユーザー
10ten Japanese Reader (Rikaichamp)
Quickly translate Japanese by hovering over words. Formerly released as Rikaichamp.
21,979 人のユーザー
BlockTube
YouTube™ Content Blocker Block channels and videos from YouTube™ Fast and easy
19,273 人のユーザー
Redirector
Automatically redirects to user-defined urls on certain pages
16,307 人のユーザー
Impulse Blocker
Block distracting websites. Just list the sites you want Impulse Blocker to pause or completely avoid.
16,295 人のユーザー
JavaScript Toggle On and Off (WebExtension)
Toggle JavaScript engine on and off the easy way
14,471 人のユーザー