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
Disconnect
Make the web faster, more private, and more secure.
94,948 人のユーザー
User-Agent Switcher and Manager
Spoof websites trying to gather information about your web navigation—like your browser type and operating system—to deliver distinct content you may not want.
93,324 人のユーザー
Download All Images
Easily save images with a wide range of customization features, such as file size, dimensions, and image type.
88,313 人のユーザー
Tab Reloader (page auto refresh)
An easy-to-use tab reloader with custom reloading time settings for individual tabs
76,898 人のユーザー
Clear Cache
Clear browser cache with a single click or via the F9 key. F9 Fever! ;)
62,274 人のユーザー
Measure-it
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
26,385 人のユーザー
Clear Browsing Data
Delete browsing data directly from the browser toolbar. Clear cookies, history and cache with a single click.
18,635 人のユーザー
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
673,757 人のユーザー
React Developer Tools
React Developer Tools is a tool that allows you to inspect a React tree, including the component hierarchy, props, state, and more. To get started, just open the Firefox devtools and switch to the "⚛️ Components" or "⚛️ Profiler" tab.
184,892 人のユーザー
完全なWebページのスクリーンショット(♥♥♥♥♥)
FireShot makes full web page screenshots. Demo: http://bit.ly/RlBQMV Screenshots can be quickly captured and: ― Saved as Image or PDF ― Sent to clipboard ― Printed ― Annotated * ― Uploaded * ― E-Mailed * * OS Windows only
160,579 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
Wappalyzer
Identify technologies on websites
119,515 人のユーザー
Web Developer
The Web Developer extension adds various web developer tools to the browser.
89,005 人のユーザー
Windscribe - Free VPN and Ad Blocker
Windscribe helps you circumvent censorship, block ads, beacons and trackers on websites you use every day.
86,657 人のユーザー
Vue.js devtools
DevTools extension for debugging Vue.js applications.
84,468 人のユーザー
Violentmonkey
Userscript support for browsers, open source.
82,234 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.
62,489 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