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

Log in

12,517 extensions found in Web Development

Filter results
Search results
  • HotVPN - Private anonymity VPN and Proxy

    HotVPN - Private anonymity VPN and Proxy

    Fast & Unlimited VPN for total privacy and security | Disable WebRTC

    HotVPN

    106 users

  • AutoRefresh

    AutoRefresh

    Automatically refreshes pages after a set interval. This is a task that is useful when conducting web application testing.

    Sheentee - Extensions

    105 users

  • Web Design Pirate for DevTools

    Web Design Pirate for DevTools

    Fast and easy way to copy web components, HTML widgets and parts of website design.

    Dalimil Hajek

    105 users

  • defyFormValidation

    defyFormValidation

    Deactivates HTML5 form validation for testing server-side or alternative client-side (e.g. JavaScript-based) validation methods.

    Christian Raue

    105 users

  • Edit with Notepad++

    Edit with Notepad++

    Edit an HTML element and all its child nodes in Notepad++ Text editor with real-time updates

    Joe Ertaba

    105 users

  • Server View

    Server View

    View server information.

    shinpachinaide

    105 users

  • DeepMaker - AI Image Editing

    DeepMaker - AI Image Editing

    Advanced AI tools for image editing, enhancement, and generation. Create, edit, and transform images with cutting-edge AI models.

    DeepMaker

    105 users

  • EditPDFree - Free PDF Tools

    EditPDFree - Free PDF Tools

    Access 30+ free PDF tools instantly. Merge, compress, convert, edit PDFs - all in your browser. 100% free, no signup needed.

    EditPdfREE

    104 users

  • Check Wordpress Version

    Check Wordpress Version

    Check what version of WordPress a web page is powered by

    Francesco De Stefano

    104 users

  • Change User-Agent

    Change User-Agent

    A Firefox extension to change the User Agent to one custom string permanently.

    amria

    104 users

  • ProScraping Website Data

    ProScraping Website Data

    Extract any table or structured data from any webpage instantly. Export to CSV, XLSX, JSON, or send to your local workflow. ProScrape Data Web is a fast, privacy-safe data extraction and scraping utility for Firefox.

    NiCk

    103 users

  • Open in Vivaldi

    Open in Vivaldi

    Open current page, link, or all tabs in the Vivaldi browser.

    Andy Portmen

    103 users

  • Tamper Data Classic

    Tamper Data Classic

    View and modify HTTP/HTTPS headers and POST data. Modern rewrite of the classic extension.

    SamDev

    103 users

  • HTML5 Gamepad Detector

    HTML5 Gamepad Detector

    This project is using HTML5 Gamepad API which can monitor your gamepads connected to your computer in a web browser.

    HKGoldenMr.A

    102 users

  • AWS Multi-Account Containers

    AWS Multi-Account Containers

    Manage multiple AWS accounts concurrently in separate tabs

    Nico

    102 users

  • server-spy2

    server-spy2

    1. show server headers、ip. 2. show an QR code for others devices to scan.

    马云腾

    102 users

  • Pixify: Image Scraping Tool

    Pixify: Image Scraping Tool

    Pixify Chrome Extension effortlessly scrape, organize, and download images from any webpage with this fast, secure, and user-friendly extension.

    Zxtechx

    102 users

  • PhotoConvert - Image Converter

    PhotoConvert - Image Converter

    Convert images to WebP, AVIF, JPEG, PNG and more. Optimize your images with quality control for the web and professional use.

    Getinfotoyou

    102 users

  • uSwitch: Reddit Accounts For FireFox

    uSwitch: Reddit Accounts For FireFox

    Save and switch between Reddit accounts

    Yuilix

    102 users

  • NotExp

    NotExp

    This extension converts OneNote notes to Xournal++ and RNote notes with only a few clicks required.

    nico9889

    101 users

  • Boomerang - SOAP & REST Client

    Boomerang - SOAP & REST Client

    Seamlessly integrate and test SOAP & REST services.

    SAO789

    101 users

  • URL Decrement Button

    URL Decrement Button

    A 1-Click URL Decrement Button for your toolbar. Works with or without URL Incrementer.

    Sixcious

    101 users

  • Color Picker - Eye Dropper

    Color Picker - Eye Dropper

    Get pixel-perfect colors from any webpage with a pro-grade eyedropper and instant one-click copying for HEX, RGB, and HSL codes.

    Abdul Wahab

    101 users

  • Nightcord Web

    Nightcord Web

    Nightcord enhances your Discord experience with custom plugins, themes, and tweaks. Built for power users who want more control over their client.

    NightCord

    100 users

  • Edit Anything any website

    Edit Anything any website

    Simple extension that allows you to edit text on any website. Twitter, Facebook, Instagram and popular news website.

    yaagame

    100 users