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

Log in

9,212 extensions found in Web Development

Filter results
Search results
  • 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

    3,166 users

  • Simple WebSocket Client

    Simple WebSocket Client

    Construct custom Web Socket requests and handle responses to directly test your Web Socket services.

    Fenjin Wang

    3,144 users

  • Copy Link Text

    Copy Link Text

    Copy the text of the link.

    def00111

    3,092 users

  • PoE Overlay: Dash

    PoE Overlay: Dash

    Share your current session on pathofexile.com with PoE Overlay

    Kyusung4698

    3,091 users

  • Octotree - GitHub code tree

    Octotree - GitHub code tree

    GitHub on steroids

    Team Octotree

    3,072 users

  • Spoof Geolocation

    Spoof Geolocation

    This extension alters browser Geolocation latitude and longitude to user-defined values

    Joue

    3,049 users

  • ChroPath

    ChroPath

    ChroPath helps to generate and validate selectors like relative xpath, cssSelector etc with iframe support.

    AutonomIQ

    3,027 users

  • HTTP Version Indicator

    HTTP Version Indicator

    An indicator showing the HTTP version used to load the page in the address bar.

    Brandon Siegel

    3,011 users

  • Screenshot Full Page

    Screenshot Full Page

    Take screenshot of entire webpage with single click.

    XtreamDev

    2,968 users

  • 解除禁止复制

    解除禁止复制

    解除网页的禁止复制

    rfverbtg

    2,947 users

  • ffCK Overlays

    ffCK Overlays

    Right-click any element to remove it. Inspired by the Chrome extension "F*ck Overlays".

    curtispf

    2,851 users

  • Omnibug

    Omnibug

    The leading browser extension for analytics and marketing technology testing and debugging

    Philip Lawrence

    2,850 users

  • Google Analytics Debugger

    Google Analytics Debugger

    Prints useful information to the JavaScript console by enabling the debug version of the Google Analytics Javascript. P.S: this add-on is migrated from Chrome store.

    Wildsky

    2,830 users

  • HTTP request maker

    HTTP request maker

    Displays a sidebar that lets you to forge HTTP requests. Press Ctrl+Shift+Y to show the sidebar and make your own HTTP request. You can choose the method GET, HEAD, POST, OPTIONS, PUT DELETE and the body data to send. Response in the main window.

    stefano

    2,828 users

  • Grepper

    Grepper

    The Query & Answer System for the Coder Community

    codegrepper.com

    2,822 users

  • CookieManager - Cookie Editor

    CookieManager - Cookie Editor

    Edit cookies related to the current page and all its sub-frames right from a popup

    Joue

    2,814 users

  • HackTools

    HackTools

    Hacktools, is a web extension facilitating your web application penetration tests, it includes cheat sheets as well as all the tools used during a test such as XSS payloads, Reverse shells to test your web application.

    Riadh B. & Ludovic C.

    2,778 users

  • FirePHP

    FirePHP

    Log from PHP to a devtools panel.

    cadorn

    2,726 users

  • Jazz-MIDI

    Jazz-MIDI

    MIDI support for browsers

    Jazz-Soft

    2,716 users

  • SN Utils

    SN Utils

    ServiceNow Productivity tools. (Personal work, not affiliated to ServiceNow)

    Arnoud Kooi

    2,682 users

  • Signer.Digital Digital Signature, PKI

    Signer.Digital Digital Signature, PKI

    Signer.Digital - Digital Signing of eReturns, PDF Signing and Web User Auth, RSA Encryption/Decryption. JULY 2022 - Added support for ICP-Brazil and ITIDA Egypt.

    Chartered Information Systems Pvt. Ltd.

    2,679 users

  • Easy Auto Refresh

    Easy Auto Refresh

    Auto-refresh and auto-reload pages after any number of seconds.

    ksoft

    2,661 users

  • SVG Export

    SVG Export

    Download SVGs from websites as SVGs, PNGs or JPEGs

    delanebob

    2,652 users

  • webhint

    webhint

    Check for best practices and common errors with your site's accessibility, speed, security and more.

    webhint

    2,626 users

  • Vercel

    Vercel

    Use the Vercel Toolbar on production deployments

    Vercel

    2,624 users