Responsify viewer
A simple slider to check the responsivness of the website.
644 users
HAR/JSON viewer
Embedded HAR/JSON viewer. Visualizes HTTP Archive (HAR) files opened locally or online. Also features JSON tree view.
642 users
Tweeks - Customize Any Website
Personalize sites you use every day with Tweeks. Make the web work your way.
635 users
SQLite Reader
Easily browse, edit and manage SQLite database inside your browser!
635 users
YourAIScroll - AI Chat History Exporter
Export your AI chat history from DeepSeek, Claude, Grok and more. Save conversations including ChatGPT Canvas, Claude Artifacts.
631 users
network monitor without devtools
monitor the network without web devtools.
629 users
Temporary Email - EmailOnDeck
Superior Temporary Email Solutions - Extension does not track, read or view the websites you visit.
628 users
Website Downloader - Source Code Copier
Download websites source code and assets
628 users
Font Inspector (WebExtension)
Click on any element to get the font info in a page popup
625 users
Bug Magnet
Right-click context menu to help with exploratory testing
620 users
ExtPul-AGHU
ExtPul-AGHU: Adiciona funcionalidade de impressão de pulseira para todos os pacientes, sem dependência de internação.
619 users
RDS bar (seo: pr, dmoz, alexa, seomoz)
RDS Bar is a handy tool for quick analysis of website and page SEO indicators, designed for webmasters and optimizers. And also with a number of useful features for ordinary users.
618 users
Github Repository Size
Add repositories size to their GitHub summary band using the GitHub public API.
617 users
Toggle Cache
Disables or enables the browser cache.
616 users
Adaptive Darkmode
A simple add-on that lets you pick and choose what sites to apply a slick, dark mode to.
614 users
WhatsApp Web Integration
Quick access to WhatsApp Web from your browser with additional features.
614 users
CSS Stacking Context inspector
Helps inspecting the css stacking contexts and solving the z-index war.
613 users
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
613 users
Live Reload — monitor and reload html, css, js
Addon for web devs. Monitor included JS, CSS and/or HTML in frames and automatically reload the host page when a change is detected in the included source. Supports inline reloading of stylesheets and frames without reloading the host page.
612 users
Google Cache
Google Cache lets you visit retrieve the web page from Google Web Cache when the site is offline.
605 users
es-client
elasticsearch管理客户端
603 users
Penetration Testing Kit
Attention! This version is no longer supported. Use /firefox/addon/owasp-penetration-testing-kit/ extension instead.
597 users
IP Geolocator
Shows detailed information about your IPv4 & IPv6 address and their location.
597 users
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.
593 users
Toggley
Light / Dark mode toggle button and theme switcher for Firefox.
591 users