To use these add-ons, you'll need to download Firefox.

Log in

13,041 extensions found in Web Development

Filter results
Search results
  • Stay for Browser

    Stay for Browser

    Userscript manager compatible with Tampermonkey, Violentmonkey. Dark mode for every website. Stay synched on Chrome/Safari/Firefox.

    Stay Browser

    234 users

  • Text Spacing Editor

    Text Spacing Editor

    A tool for editing text spacing properties on web pages. WCAG conformance information included.

    Actum, s.r.o.

    234 users

  • Compteur de carte Trello

    Compteur de carte Trello

    Cette extension permet de toujours afficher le nombre de cartes d'une liste dans un tableau Trello. Cette extension utilise des fonctionnalités natives sans JavaScript pour garantir des performances optimales.

    Arnaud LEMERCIER

    234 users

  • Folders for Gemini

    Folders for Gemini

    Organize your Gemini chats into folders. Drag & drop, custom colors, native design, and 100% private local storage.

    RaymonDev

    233 users

  • all reload

    all reload

    You can reload all tabs from right clicking context menu.

    kakakikikeke

    233 users

  • Trello Card ID

    Trello Card ID

    Shows Trello card IDs for use in commits and for other quick references. Copy the ID to the clipboard by clicking on it.

    Alexander Ploner

    232 users

  • 极客侧边栏-免费DeepSeek丨书签云同步

    极客侧边栏-免费DeepSeek丨书签云同步

    使用ChatGPT、Claude、Grok和DeepSeek进行高效创作。一站式整合AI助手+书签云管理+效率工具，支持书签查重、有效性检测、AI整理书签、网页总结、文档分析、网页截图等强大功能。让侧边栏化身成你的超级工作台

    极客侧边栏

    231 users

  • Block Sign In With Google

    Block Sign In With Google

    Blocks the sign in with google popup

    zaporter

    231 users

  • Sound Booster 1000%

    Sound Booster 1000%

    Boost the sound volume of web pages from 0% to 1000%

    SBIOMSS

    231 users

  • SAASPASS Password Manager & Authenticator 2FA SSO

    SAASPASS Password Manager & Authenticator 2FA SSO

    SAASPASS is a free Password Manager & Authenticator 2FA code generator. There is NO need for a desktop application. You can use the Authenticator code generator & SAASPASS can autofill & autologin as well with single sign-on SSO

    SAASPASS

    230 users

  • InspectWP - WordPress Theme & Plugin Detector

    InspectWP - WordPress Theme & Plugin Detector

    InspectWP is a website and WordPress analysis tool which includes a WordPress theme and plugin detector.

    InspectWP

    230 users

  • CRX下载器

    CRX下载器

    CRX下载器，Chrome/Edge插件下载，可下载微软和谷歌扩展商店插件

    waahah

    228 users

  • Site Palette

    Site Palette

    Extract real color palettes from any website. Export to Figma, Sketch, Adobe Swatch, or SVG. Built for designers and front-end developers.

    Stas Kulesh

    228 users

  • PinVault Pro – Pinterest Bulk Downloader

    PinVault Pro – Pinterest Bulk Downloader

    Professional Pinterest bulk downloader with AI auto-scroll, dual-interface sync, and smart vault organization for creators.

    Yogeshwar Kumar

    228 users

  • Eye-Able® Audit for WCAG

    Eye-Able® Audit for WCAG

    Check your website for the most common WCAG/ADA errors.

    Web Inclusion GmBH

    228 users

  • Keeper Wallet

    Keeper Wallet

    Your entry point to the Waves blockchain and Waves-powered web services

    Waves Technologies

    227 users

  • LoveJS

    LoveJS

    漏洞挖掘神器 | 发现隐藏接口 | 敏感信息发现 | 批量打开URL

    n0name

    227 users

  • Copy as Python Requests

    Copy as Python Requests

    Copy requests from the devtools network panel as Python requests code for fast traffic mimicing.

    Peace-Maker

    227 users

  • Chrome Litchi Virtual Mission

    Chrome Litchi Virtual Mission

    Adds ability to export mission from mission hub as google earth virtual tour

    bazuchan

    226 users

  • phab-test-policy

    phab-test-policy

    Adds Testing Policy UI to Mozilla's Phabricator instance

    nchevobbe

    226 users

  • HTTP Header Spy

    HTTP Header Spy

    HTTP Header Spy enables you to inspect request- response headers and cookies right after page load with no extra clicks.

    Michiel Roos

    225 users

  • Performance-Analyser

    Performance-Analyser

    Get insight into the performance of the website in the current tab - sort of a mini live version of WebPageTest.

    Michael Mrowetz

    225 users

  • Webcompat.com Reporter

    Webcompat.com Reporter

    Adds a button to allow users to easily report site compatibility issues at webcompat.com, for the active tab.

    Thomas Wisniewski

    225 users

  • Responsive View Simulator

    Responsive View Simulator

    Seamlessly test website appearance on various mobile devices with this handy extension. Preview the responsive design in real-time.

    Buy Bulk Weed

    225 users

  • S3BucketList

    S3BucketList

    S3BucketList automatically scans network requests made by your browser to detect Amazon S3 bucket URLs

    Alec Blance

    224 users