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。
1,322,801 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.
161,311 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.
110,822 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.
99,700 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!)
48,808 人のユーザー
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
797,240 人のユーザー
I don't care about cookies
Get rid of cookie warnings from almost all websites!
239,685 人のユーザー
Greasemonkey
Customize the way a web page displays or behaves, by using small bits of JavaScript.
157,488 人のユーザー
Absolute Enable Right Click & Copy
Force Enable Right Click & Copy
88,415 人のユーザー
h264ify
Makes YouTube stream H.264 videos instead of VP8/VP9 videos
72,302 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.
51,148 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.
46,193 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。
37,990 人のユーザー
BlockTube
YouTube™ Content Blocker Block channels and videos from YouTube™ Fast and easy
32,274 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.
19,072 人のユーザー
Redirector
Automatically redirects to user-defined urls on certain pages
18,505 人のユーザー
JavaScript Toggle On and Off (WebExtension)
Toggle JavaScript engine on and off the easy way
12,465 人のユーザー
Empty Cache Button
Cache clearing made easy. One click.
9,886 人のユーザー
Page Assist - A Web UI for Local AI Models
ローカルで実行中のAIモデルを使って、Webブラウジングをアシストします。
9,464 人のユーザー
Scratch Addons
Scratch Addons provides customizable features and themes for the scratch.mit.edu website and project editor.
8,712 人のユーザー
Pinned Google Calendar
Go to the pinned Google Calendar tab. If it doesn't exist, it's created.
8,219 人のユーザー
Form History Control
Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller. Auto-save text entered in any form while typing to allow fast recovery when disaster strikes.
7,061 人のユーザー
Default Search with Anthropic
アドレスバーからClaude AIに質問してみましょう。ページの要約、質問への回答、アイデア出しなど、さまざまな用途にご利用いただけます。Claude AIは、ChatGPTの代替となるAI生産性向上ツールです。
6,898 人のユーザー
WebScrapBook
Capture web pages to local device or backend server for future retrieval, organization, annotation, and edit.
6,824 人のユーザー
Roblox+
Extends the features available on roblox.com
5,032 人のユーザー