To use Android extensions, you'll need Firefox for Android. To explore Firefox for desktop add-ons, please visit our desktop site.

Log in

613 extensions found in Web Development

Filter results
Search results
  • Accessibility Visualizer

    Accessibility Visualizer

    Visualize important accessibility properties (accessible names, heading levels, form labels etc).

    ymrl

    31 users

  • 大盘云图-股票

    大盘云图-股票

    大盘云图是一款直观展示A股市场整体情况的热力图工具，帮助投资者快速获取股票涨跌、流通市值等信息，适合日常关注股市动态和复盘分析。

    面壁投资

    31 users

  • GitHub Pages 404

    GitHub Pages 404

    Provides links to Owner's Profile and GitHub Repo on a GitHub Pages 404 page.

    Harsh Narayan Jha

    30 users

  • Quick ColorPicker

    Quick ColorPicker

    Pick colors from any webpage using the EyeDropper tool, copy HEX/RGB values, preview swatches, and save recent colors for quick access.

    Jatin

    30 users

  • Chameleon-new

    Chameleon-new

    Spoof your browser profile. Includes a few privacy enhancing options.

    chameleon legacy

    29 users

  • GitHub Repository Size

    GitHub Repository Size

    Displays the size of a GitHub repository on its homepage

    Pranav Mangal

    28 users

  • Script for Me

    Script for Me

    A tiny userscript manager. Injects JavaScript code (and CSS code) into a page. A simple wrapper for the browser.contentScripts API. Works on Android as well as on PC. ウェブページにスクリプト（CSSも可）を注入する拡張機能。browser.contentScripts APIの単純なラッパー。Androidでも機能します。

    yobukodori

    28 users

  • Reading Progress Bar PRO

    Reading Progress Bar PRO

    Shows a customizable reading progress bar as you scroll through content

    Sumalya Chatterjee

    28 users

  • Purplemonkey2

    Purplemonkey2

    Just like Violentmonkey, but with more unsafe API.

    gholk

    27 users

  • diffs.dev

    diffs.dev

    Adds a button to open diffs in the diffs.dev diff viewer.

    Jason Penilla

    27 users

  • XSSpect

    XSSpect

    Detect possible reflected XSS vulnerabilities by automatically injecting and monitoring custom payloads in URLs.

    Muhammed Galal

    27 users

  • Dark Mode Cyberpunk

    Dark Mode Cyberpunk

    Apply a dark, cyberpunk-style theme to all websites.

    namideus

    27 users

  • Meta Viewport Adder

    Meta Viewport Adder

    Adds the meta viewport tag only to sites that don't have it.

    Heinrich Lunge

    27 users

  • Morqana auto refresh

    Morqana auto refresh

    Simple and reliable auto-refresh extension for Firefox.

    saleembey

    27 users

  • ChatGPT Diagram Renderer

    ChatGPT Diagram Renderer

    Renders Diagrams, Chats, Mindmaps and other formats directly in the ChatGPT Webinterface, using the kroki.io API

    grayfallstown

    26 users

  • Play Store ASO Tweak by TaoufikGFX

    Play Store ASO Tweak by TaoufikGFX

    **Play Store ASO Tweak by TaoufikGFX** enhances your *[Google Play Store]* experience with *[ASO]* insights, keyword analysis, and export of app assets. Optimize apps with detailed data for better *[SEO]*. *[Google Play Store]: Google Play Store*

    Taoufik

    26 users

  • Copy Tab Urls

    Copy Tab Urls

    A powerful, privacy-respecting extension that makes copying your open URLs effortlessly, with optional Markdown format, and with the ability to select some of them

    Ina's Simple But Good

    26 users

  • FoxyPGP

    FoxyPGP

    PGP integration for web browsers

    FoxRefire

    25 users

  • SwaggerAuthenticator

    SwaggerAuthenticator

    Automate API-Key authentication in swagger.

    Indogermane

    25 users

  • StrawPage Frames

    StrawPage Frames

    The extension works only on *.straw.page websites and allows for image upload and processing.

    Konrad

    25 users

  • DevProblems: Developer Tips

    DevProblems: Developer Tips

    Fetch and display Developer Tips, News and Blogs from DevProblems

    DevProblems

    24 users

  • Domain Age Check

    Domain Age Check

    Domain age checker is a whois tool / extension developed by Cynexium (Umar) for checking any domain's age

    Umar

    24 users

  • Better Page Ruler

    Better Page Ruler

    Draw, resize, drag and move a ruler box on any webpage.

    Sayedul Sayem

    24 users

  • AppLinks

    AppLinks

    AppLinks intercepts application links such as "slack://" and lets you inspect them before opening them in Firefox. Also allows to export the opened links for further analysis. Also scans QR codes to extract deep-links.

    MasterSplinter

    24 users

  • IP Tracker

    IP Tracker

    The Extension displays the IP address and flag of the associated country...

    Tatami-web

    24 users