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12,253 extensions found in Web Development

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  • Referer Control

    Referer Control

    Control the HTTP Referer on a per-site basis.

    Keepa.com

    3,793 users

  • Language Switch

    Language Switch

    Allows to change the language identifier sent to webservers to whatever language you need.

    Manuel Reimer

    3,722 users

  • XML Viewer Plus

    XML Viewer Plus

    A powerful XML Viewer, supports text/regex and jQuery/CSS, XPath selectors

    Francesco De Stefano

    3,703 users

  • base64 decoder

    base64 decoder

    select some text, and base64 decode it.

    thedingo

    3,688 users

  • Pixel Perfect Pro

    Pixel Perfect Pro

    Pixel Perfect Pro helps developers and designers to make best sites and more high quality products.

    max

    3,669 users

  • Print for Firefox

    Print for Firefox

    Print the current page you see with one single click. That for all kinds of photo printing, poster printing, business cards, etc. Print today a web page, photo or business card with your own favorite Print button.

    Stefan vd

    3,641 users

  • Right-Click Borescope

    Right-Click Borescope

    List all images under your cursor, even ones hidden by other elements

    Blackle Mori

    3,629 users

  • ТУБЕРНЕТ - Доступ к любимым сервисам

    ТУБЕРНЕТ - Доступ к любимым сервисам

    ТУБЕРNET - Бесплатный VPN для Mozilla Firefox. Доступ к YouTube, ChatGPT, Claude, Gemini, Instagram, Facebook, X, Discord, Threads, RuTracker, Rutor, Roblox, Telegram, WhatsApp, Spotify, Snapchat, Ficbook, Роблокс, Ютуб, Инстаграм, Фейсбук, Дискорд

    DevFusion

    3,621 users

  • Salesforce Inspector Reloaded

    Salesforce Inspector Reloaded

    Productivity tools for Salesforce administrators and developers to inspect data and metadata directly from the Salesforce UI.

    Thomas Prouvot

    3,602 users

  • Speed Booster for ChatGPT: Fix Lag in Long Chats

    Speed Booster for ChatGPT: Fix Lag in Long Chats

    Stop browser freezing and lag in long ChatGPT conversations. Instantly speeds up the entire UI and reduces memory usage.

    BGSN

    3,558 users

  • Hoppscotch Extension for Firefox

    Hoppscotch Extension for Firefox

    Removes CORS restrictions for cross-origin requests, particularly those to localhost. It essentially allows Hoppscotch to make requests that might otherwise be blocked by the browser's security policies.

    Hoppscotch

    3,535 users

  • xPath Finder

    xPath Finder

    Plugin to get the elements xPath.

    Tomasz Rembacz

    3,513 users

  • Open With

    Open With

    Quickly test out your web pages in Chrome, Edge, Safari, or Opera. Open With opens the current page in your other browsers with just two clicks.

    Geoff Lankow

    3,502 users

  • SelectorsHub

    SelectorsHub

    xPath plugin to generate, write and verify xpath & cssSelector. It auto generates all kinds of relative xpath, axes xpath, index xpath, css selector.

    Sanjay Kumar | SelectorsHub Founder

    3,485 users

  • Open in Tor Browser

    Open in Tor Browser

    Open current page or link in tor browser for better privacy

    Andy Portmen

    3,380 users

  • SVG Export

    SVG Export

    Download SVGs from websites as SVGs, PNGs or JPEGs

    delanebob

    3,376 users

  • JSON Formatter

    JSON Formatter

    Formats JSON automatically! Open Source, Available with 60+ Themes, Syntax Highlighting, automatically linkifies links and more.

    Arnav Kumar

    3,361 users

  • CSSViewer

    CSSViewer

    A simple yet powerful CSS property viewer. For Firefox Quantum

    Mohsen Khanpour

    3,360 users

  • Gemini Voyager

    Gemini Voyager

    Supercharge your Gemini experience with timeline navigation, folder organization, prompt library, and chat export.

    Nagi-ovo

    3,347 users

  • Page Ruler

    Page Ruler

    Measure page elements size in pixel with an easy-to-use ruler.

    Leonardo

    3,283 users

  • CopyTables

    CopyTables

    Select table cells, rows and columns with your mouse or from a context menu. Copy as rich text, HTML, CSV and TSV

    Nirantak Raghav

    3,265 users

  • X-Forwarded-For Header

    X-Forwarded-For Header

    This extension allows you quickly to set the X-Forwarded-For HTTP Header

    Philip Lawrence

    3,260 users

  • WebXR API Emulator

    WebXR API Emulator

    Emulate WebXR devices on your browser

    Mozilla Mixed Reality

    3,241 users

  • Salesforce inspector

    Salesforce inspector

    Productivity tools for Salesforce.com administrators and developers to inspect data and metadata.

    Jesper Kristensen

    3,210 users

  • ChatGPT Sidebar for Fire Fox

    ChatGPT Sidebar for Fire Fox

    Use ChatGPT in sidebar. You won't need to waste time switching between ChatGPT and other tabs.

    HamzaDev

    3,200 users