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

Log in

782 extensions found in Web Development

Filter results
Search results
  • ElementEditor

    ElementEditor

    强大的网页元素编辑工具，可实时修改任何网页元素，效率极高。

    xiaosun

    14 users

  • CopyToClip

    CopyToClip

    CopyToClip is allow user to copy codes snippets from Stackoverflow.

    Mohammad Farhan

    14 users

  • Go Up

    Go Up

    This browser extension jumps to the upper directories of the current URL

    tomarin

    14 users

  • Meta No User-Scalable

    Meta No User-Scalable

    Adds the meta viewport tag only to sites that don't have it, and disables user scalable for all sites.

    Piggy Gaming

    14 users

  • MDN Search 2026: Web & Extension Developers' Bible

    MDN Search 2026: Web & Extension Developers' Bible

    Set MDN as your default engine for instant access to 11,000+ verified web docs. Use AI Help for real-time coding solutions and technical preservation through 2026. The world’s most trusted library for HTML, CSS, and JS—search like a pro today!

    Handmade Internet Treasures

    14 users

  • Unacademy Watermark Remover

    Unacademy Watermark Remover

    Remove annoying account watermark from Unacademy hosted videos

    Sahil Ahuwalia

    13 users

  • Mobile phone emulator - test websites

    Mobile phone emulator - test websites

    Elevate your responsive web development workflow with the ultimate Mobile Phone Emulator.

    Hizone

  • AutoFill Pro-Smart Profile,Recorder

    AutoFill Pro-Smart Profile,Recorder

    AutoFill Pro: Advanced Chrome extension for automatic form filling. Smart profiles, form recorder, 100% secure. Save hours weekly with intelligent auto-fill technology.

    PatilWeb

    13 users

  • JSON Viewer Pro By PatilWeb

    JSON Viewer Pro By PatilWeb

    ✨ A powerful JSON viewer and formatter for Firefox built with TypeScript A powerful and elegant Chrome extension for viewing, formatting, and analyzing JSON data on web pages.

    PatilWeb

    13 users

  • IP Change Notifier

    IP Change Notifier

    Tracks your IP address and notifies you if it changes.

    beau

    13 users

  • Invert Any Web

    Invert Any Web

    Inverts colors of web pages and PDFs, including offline content.

    Kaveen Amarasekara

    13 users

  • Github Aid - repo file size

    Github Aid - repo file size

    Displays github repository file and folder sizes. Supports GraphQL and REST api modes. Also mobile friendly.

    omar-azmi

    13 users

  • Rybbit Opt-Out

    Rybbit Opt-Out

    Disable Rybbit analytics on every page.

    David Fiala

    13 users

  • Claude Track & Export

    Claude Track & Export

    Track Claude usage, export conversations to Markdown, and jump into new chats instantly.

    Jedd

    12 users

  • REST API Client Tester

    REST API Client Tester

    🚀 A Postman‑like API client that works on Firefox desktop & Android

    onyxwizard

  • Data Extraction - G TECH

    Data Extraction - G TECH

    This Plugin Extracts the Data about the products from the Chinese MarketPlace and saves that data in the form of CSV file and in the DATABASE. You can also Download the CSV file.

    IKRAM KHAN

    12 users

  • Calculator

    Calculator

    A sleek, Calculator extension for your browser, offering a clean and intuitive interface for all your basic and advanced calculations.

    AcrNischal

    12 users

  • Share 2 Archive Webpage Today

    Share 2 Archive Webpage Today

    Publicly archive any website using the archive.today, archive.is, archive.ph service

    Gabriel

    12 users

  • GlassPad - A Note Taking App

    GlassPad - A Note Taking App

    A dark glassmorphism notepad with MS Word features.

    Sumalya Chatterjee

    12 users

  • Show My IP Location

    Show My IP Location

    Displays your IP-based location on browser start.

    Kamran

    12 users

  • Deedoop: Your Private AI Agent

    Deedoop: Your Private AI Agent

    A local-first AI assistant that lives in your browser. Secure, offline, and fully personal.

    Alex Brygider

    12 users

  • GitHub Enhancer

    GitHub Enhancer

    Shows clean date format next to relative time on GitHub

    myst25

    11 users

  • Sovendus Integration Tester

    Sovendus Integration Tester

    This extension can be used to verify if your Sovendus Voucher Network or Checkout Benefits integration is setup properly

    Sovendus GmbH

    11 users

  • VimNavi

    VimNavi

    Navigate web pages using Vim hotkeys.

    SJ DK

    11 users

  • Link Automator (Outlook, Yahoo & Gmail)

    Link Automator (Outlook, Yahoo & Gmail)

    Monitors Outlook, Yahoo, and G-Mail for new emails from a specific sender, finds links, copies them, and opens them in a new tab.

    MFA Capsolver For AF

    11 users