Request Interceptor
Intercept HTTP and HTTPS Requests. Add custom rules to modify request/response headers, block/redirect requests, modify query params. Example Usage: This extension can be used to block all ads having url (*/ad.x.com/*) by creating rules
659 Benutzer
Responsify viewer
A simple slider to check the responsivness of the website.
658 Benutzer
Code Editor
Powered by the Monaco Editor, it provides support for basic syntax colorization, IntelliSense, validation and Diff Editor features.
653 Benutzer
SQLite Reader
Easily browse, edit and manage SQLite database inside your browser!
651 Benutzer
Font Inspector (WebExtension)
Click on any element to get the font info in a page popup
648 Benutzer
Tweeks - Customize Any Website
Personalize sites you use every day with Tweeks. Make the web work your way.
648 Benutzer
Ctool 程序开发常用工具
程序开发常用工具,哈希/加解密/编码转换/时间戳/二维码/拼音/IP查询/代码优化/Unicode/正则等...
646 Benutzer
ChatGPT Timestamp
Displays timestamps for ChatGPT messages
644 Benutzer
Proxy Checker
Check the quality of your proxies' IPs in bulk.
643 Benutzer
Invisible Video Downloader
Silently downloads all video resources on page load
642 Benutzer
Penetration Testing Kit
Attention! This version is no longer supported. Use /firefox/addon/owasp-penetration-testing-kit/ extension instead.
638 Benutzer
Github Repository Size
Add repositories size to their GitHub summary band using the GitHub public API.
634 Benutzer
Temporary Email - EmailOnDeck
Superior Temporary Email Solutions - Extension does not track, read or view the websites you visit.
634 Benutzer
YourAIScroll - AI Chat History Exporter
Export your AI chat history from DeepSeek, Claude, Grok and more. Save conversations including ChatGPT Canvas, Claude Artifacts.
622 Benutzer
M3U8 Link Finder
Detect .m3u8 Links on any website to download them
622 Benutzer
Google Cache
Google Cache lets you visit retrieve the web page from Google Web Cache when the site is offline.
620 Benutzer
Owl devtools
Firefox devtools extension for Odoo Owl framework
620 Benutzer
Adaptive Darkmode
A simple add-on that lets you pick and choose what sites to apply a slick, dark mode to.
618 Benutzer
New Tab Same Group
Opens new tabs in the same group as the active one — right after, at the beginning, or at the end. Supports Firefox’s native tab groups, vertical (sidebar) or horizontal (classic) modes.
613 Benutzer
network monitor without devtools
monitor the network without web devtools.
611 Benutzer
FxIF
View exIF allows you to view metadata contained in .jpg and .tiff images from your Firefox browser.
610 Benutzer
Website Downloader - Source Code Copier
Download websites source code and assets
610 Benutzer
WhatsApp Web Integration
Quick access to WhatsApp Web from your browser with additional features.
605 Benutzer
IdeaPi: Chat Exporter for ChatGPT, Gemini & Claude
Export ChatGPT, Gemini, Claude, and DeepSeek conversations to Markdown, or sync them to IdeaPi for workflow processing.
603 Benutzer
Fast Auto Clicker
Automatically clicks the active web page at regular intervals.
599 Benutzer