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。
1,157,867 人のユーザー
Ghostery – プライバシー広告ブロッカー
Ghosteryは強力なプライバシー拡張機能です。広告をブロックし、トラッカーを阻止し、ウェブサイトを高速化します。
1,030,406 人のユーザー
FoxyProxy Standard
FoxyProxy は Firefox の限定的なプロキシ機能を置き換える、高度なプロキシ管理ツールです。SwitchProxy や ProxyButton、QuickProxy、xyzproxy、ProxyTex、TorButton などよりも多くの機能を提供します。
203,020 人のユーザー
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
673,757 人のユーザー
ColorZilla
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
146,486 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.
62,489 人のユーザー
Cookie-Editor
Cookie-Editor lets you efficiently create, edit and delete a cookie for the current tab. Perfect for developing, quickly testing or even manually managing your cookies for your privacy.
61,923 人のユーザー
User-Agent Switcher
Easily override the browser's User-Agent string
61,228 人のユーザー
Ruffle
Flashを元の場所に戻します。
49,434 人のユーザー
Disable JavaScript
Adds the ability to disable JavaScript for specific sites or specific tabs. You can customize the default JS state (on or off), the disable behavior (by domain or by tab) and much more.
36,283 人のユーザー
WhatFont
A wrapper for Chengyin Liu's WhatFont tool
34,046 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).
31,828 人のユーザー
Disable WebRTC
WebRTC leaks your actual IP addresses from behind your VPN, by default.
29,238 人のユーザー
cookies.txt
Exports all cookies to a Netscape HTTP Cookie File, as used by curl, wget, and youtube-dl, among others.
16,275 人のユーザー
Google Lighthouse
Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.
15,985 人のユーザー
RESTED
A REST client for the rest of us
15,081 人のユーザー
JavaScript Toggle On and Off (WebExtension)
Toggle JavaScript engine on and off the easy way
14,492 人のユーザー
JSON Lite
Fast JSON viewer - highlights, shows items count/size, handles large files
14,136 人のユーザー
My IP Hider VPN
My IP Hider VPN is number one tool for hiding your IP and unblocking any web site! If your Firefox version is less then 55 please install older My IP Hider VPN from "Version History" (https://goo.gl/7ZQQjZ)
14,029 人のユーザー
Empty Cache Button
Cache clearing made easy. One click.
12,874 人のユーザー
Emoji Cheatsheet
A reference for the codes to generate Emojis on popular sites like GitHub or Basecamp and Unicode characters for Twitter and Facebook. Search Emojis by name or view recently selected items. Emojis are automatically copied to the clipboard.
11,194 人のユーザー
Fake Filler
A form filler that fills all form inputs (textboxes, textareas, radio buttons, dropdowns, etc.) with fake and randomly generated data. The purpose of this extension is to help developers and testers test forms quickly and easily.
11,156 人のユーザー
Proxy Toggle
Toggle between direct connection and a single proxy server via a toolbar icon.
10,394 人のユーザー
ScriptCat
脚本猫,一个可以执行用户脚本的浏览器扩展,万物皆可脚本化,让你的浏览器可以做更多的事情!
10,138 人のユーザー