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

Log in

503 extensions found in Web Development

Filter results
Search results
  • HackerTab For Hunters

    HackerTab For Hunters

    Modern, AI-Powered Hacker Themed New Tab For Your browser

    CyberTechAjju

    10 users

  • IP Change Notifier

    IP Change Notifier

    Tracks your IP address and notifies you if it changes.

    beau

    10 users

  • Offline QR Code Generator PNG SVG

    Offline QR Code Generator PNG SVG

    Generate and save QR codes with various data types

    DotSlashGabut

    10 users

  • WPlaceTools 26.08.2025

    WPlaceTools 26.08.2025

    Cross-browser extension

    Hakimjon3d

    10 users

  • re-CodeCopy

    re-CodeCopy

    Because copy to clipboard buttons should exist on every code snippet

    Staler2019

    10 users

  • MyEpitech_percentages (new)

    MyEpitech_percentages (new)

    Restore the old percentage of My Epitech !

    Remi Deroussent

    9 users

  • Web Defuser

    Web Defuser

    Userscripts/styles on steroids. Keep YouTube or Instagram playing in the background, remove annoying nagging popups, add dark mode to websites, increase video volume past 100% and more!

    Gear

    9 users

  • Unga Bunga User-Agent

    Unga Bunga User-Agent

    an extension for user agent spoofing with always up-to-date user agents and some nice features

    ShrekBytes

    9 users

  • SiteIP

    SiteIP

    Displays the actual IP address of the server for the current site.

    VAAR

    9 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

    9 users

  • Invert Any Web

    Invert Any Web

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

    Kaveen Amarasekara

    9 users

  • Domain Age Finder Google SERP

    Domain Age Finder Google SERP

    Find & highlight domains under 4 years old on Google SERP for SEO analysis.This extension enhances your Google search experience by providing domain age information directly on the search results page.

    Semantic Pen

    9 users

  • amo-info

    amo-info

    The best extension to show information about AMO and related services.

    William Durand 🌟

    9 users

  • Charon ChatGPT RTL Prompt

    Charon ChatGPT RTL Prompt

    Charon ChatGPT RTL Prompt is a browser extension that allows users to switch between Right-to-Left (RTL) and Left-to-Right (LTR) text directions in ChatGPT for better control over input text.

    Ch4120N

    8 users

  • Velocity Web Speed

    Velocity Web Speed

    Optimizes and accelerates image, script, and font loading on websites to significantly improve page speed and overall performance.

    Baryo

    8 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

    8 users

  • Sokker JSON data exporter

    Sokker JSON data exporter

    This extension helps sokker.org authenticated users to get JSON data so it can be used to improve the management of your team.

    Ismail

    8 users

  • HackerCookies - Cookie Editor

    HackerCookies - Cookie Editor

    A minimal, professional cookie editor with dark hacker-style theme for power users.

    Dheelep N

    8 users

  • List Task - A ToDo List App

    List Task - A ToDo List App

    A persistent todo list that saves your tasks even after browser restart

    Sumalya Chatterjee

    8 users

  • Midnight Surf

    Midnight Surf

    Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.

    Manas

    8 users

  • Copy Link Title

    Copy Link Title

    Copy the title attribute of links.

    MiLaN

    7 users

  • SEO SkyView

    SEO SkyView

    Get a quick SEO overview of any webpage with just one click. SAVE THOUSANDS ON SEO AGENCY FEES.

    vidolimo

    7 users

  • GitOwl (UNOFFICIAL)

    GitOwl (UNOFFICIAL)

    An unofficial port of GitOwl for firefox. GitOwl provides a sidebar with contextual insights to help you navigate the world of open source.

    dude-with-the-long-username

    7 users

  • Streamscript Syntax Highlighter

    Streamscript Syntax Highlighter

    Autocomplete and formatting for the Streamscript language

    Streamscript Ltd

    7 users

  • Prompt Library

    Prompt Library

    Browser Extension to Organize, save and use prompts in all popular AI Chat Bots.

    Softweb Tuts

    7 users