FB unseen
Blocks the ”seen” feature of the facebook messenger, and your friends will no longer be able to see if you read their messages.
3,126 users
webhint
Check for best practices and common errors with your site's accessibility, speed, security and more.
3,116 users
SmartProxy
SmartProxy is a smart automatic proxy switcher that will automatically enable/disable proxy for the sites you visit, based on customizable rules.
3,106 users
Page Ruler
Measure page elements size in pixel with an easy-to-use ruler.
3,096 users
SubWallet - Polkadot Wallet
SubWallet is the comprehensive non-custodial wallet solution for Polkadot, Substrate & Ethereum ecosystems.
3,084 users
Referer Control
Control the HTTP Referer on a per-site basis.
3,080 users
Katalon Recorder | Automated Selenium Tests Genera
Selenium IDE alternative to record and export Selenium scripts. Provides reports & screenshots. Fast & open-sourced.
3,053 users
WebXR API Emulator
Emulate WebXR devices on your browser
3,046 users
ReCaptcha Solver
Verify Google ReCaptcha V2 automatically with :2Captcha, DeathByCaptcha, ImageTyperz, RuCaptcha, Anti-Captcha, BestCaptchaSolver and EndCaptcha Without API or TOKEN key it won't work!!
2,970 users
Wizdler
Parses the WSDL files and generates SOAP messages for you.
2,938 users
Quick Accept-Language Switcher
Provides a quick way of changing the HTTP Accept-Language header so you can view and test websites with a different locale.
2,897 users
Yandex Wordstat Assistant
Расширение, позволяющее значительно ускорить сбор фраз с помощью сервиса подбора слов Яндекс (wordstat)
2,889 users
LiveReload - Web extension
Web extension based version of LiveReload. Supports Firefox 57 (Firefox Quantum)
2,848 users
JSON-formatter
Fast JSON formatting.
2,841 users
图片下载插件万能
一个可以下载很多源文件图片的插件非常好用
2,827 users
VisBug
Open source browser design tools
2,824 users
Merge Windows
Merges the tabs from multiple windows together into one window. Extension won't show context menu item when there aren't more than one window of the same type to merge together. Private windows will only merge with private windows not normal.
2,812 users
dataslayer
Debug and test tag management (Google Tag Manager, Adobe Launch / DTM, Tealium) and analytics (Google Analytics, Adobe Analytics) implementations from within Developer Tools.
2,764 users
Custom Style Script
Add custom JavaScript codes or styles to any page.
2,752 users
Season Pass Pass
Travel back in time and pull rewards from any previous season pass in destiny 2
2,691 users
Feature Queries Manager
Manage and toggle CSS on a page behind a @supports Feature Query.
2,647 users
CopyTables
Select table cells, rows and columns with your mouse or from a context menu. Copy as rich text, HTML, CSV and TSV
2,619 users
Xdebug-ext
Adds a simple button to inject a Xdebug cookie. Compatible with Firefox 57+ (Quantum). It is a port of "The easiest Xdebug" Addon by Nikita Nikitin, which is not compatible with WebExtensions.
2,616 users
Laboratory (Content Security Policy / CSP Toolkit)
Because good website security shouldn't only be available to mad scientists! Laboratory is a WebExtension that helps you generate a Content Security Policy (CSP) header for your website.
2,599 users
SEO META 1 COPY
This is an extension that allows you to easily check SEO-related meta information and copy it with one click.
2,587 users