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

Log in

10,326 extensions found in Web Development

Filter results
Search results
  • Spector.js

    Spector.js

    Easily explore and debug any WebGL context.

    BabylonJS

    1,277 users

  • HackBar

    HackBar

    A browser extension for Penetration Testing

    0140454

    1,273 users

  • Gemini next to Google results

    Gemini next to Google results

    🗨️ Gemini answer alongside Google results.

    OptiSearch

    1,260 users

  • LightSession Pro for ChatGPT

    LightSession Pro for ChatGPT

    Fix slow, laggy ChatGPT tabs in Firefox. Local-only extension that speeds up long conversations by trimming old messages from the page (no data leaves your browser).

    Emil K

    1,258 users

  • Page Hacker

    Page Hacker

    Edit in Firefox the page displayed in any tab, with formatting tools.

    nico@nc

    1,256 users

  • Material Icons for Github

    Material Icons for Github

    Replace the file/folder icons on github file browsers with icons representing the file's type and which tool it is used by.

    Claudio Santos

    1,241 users

  • Ace Script

    Ace Script

    User Script Manager with the support of Ace Stream technologies

    Ace Stream

    1,229 users

  • Edit Anything

    Edit Anything

    Edit Anything from Chrome is now on Firefox. Before It was on Chrome. Click icon to turn on. sets contentEditable to true. Click to set false. If on then click text/any other element and make the changes. Changes don't persist after reload.

    Kellen

    1,219 users

  • MaterialDesignIcons Picker

    MaterialDesignIcons Picker

    Quick & easy icon picker

    chteuchteu

    1,213 users

  • M3U8/HLS Player with Custom Keyboard Controls

    M3U8/HLS Player with Custom Keyboard Controls

    Advanced M3U8/HLS player with customized keyboard controls/shortcuts just like YouTube. Supports keyboard shortcuts, PIP mode, frame navigation, and live streams.

    Silent Dude

    1,205 users

  • BetterViewer

    BetterViewer

    BetterViewer was designed as a replacement for the image viewing mode built into Firefox and Chrome-based web browsers. With BetterViewer you can use various keyboard shortcuts to quickly pan, zoom images, edit and a lot more!

    Adem KOUKI

    1,204 users

  • Display #Anchors

    Display #Anchors

    Displays anchors for all content in the current web page without breaking the layout.

    Rob W

    1,202 users

  • Adblock For Youtube

    Adblock For Youtube

    Adblock For Youtube & Auto Ad Skip It is auto ad skip for youtube, ad blocker, hides ad banner in youtube home screen.

    Patricia Fisher

    1,187 users

  • DataScraper

    DataScraper

    Extension for FF and Chrome to extract data from web pages to csv.

    Rakot

    1,186 users

  • Advent of Code Charts

    Advent of Code Charts

    Inject charts in your private leaderboard page for Advent of Code - see https://github.com/jeroenheijmans/advent-of-code-charts

    Jeroen Heijmans

    1,166 users

  • OwlZoom for Youtube Videos

    OwlZoom for Youtube Videos

    Zoom+in Youtube Videos

    Ferris Etanish

    1,165 users

  • Debug CSS

    Debug CSS

    Adds outline to all elements on the page to show the culprit element which is changing desired layout hit `Alt+Shift+C ` key to toggle the extension

    Pranay Joshi

    1,160 users

  • Twitter

    Twitter

    Download the images and videos.

    Lim Xiu Quan

    1,155 users

  • Mobile DevTools

    Mobile DevTools

    A firefox add-on to get developper tools using eruda on your phone.

    surv

    1,154 users

  • JWT Debugger

    JWT Debugger

    The JWT.io debugger as a Web Extension

    JWT.io

    1,141 users

  • http tracker

    http tracker

    Monitoring the browser network for all tabs and pages in a single page. Track network traffic / http traffic sent from each tab, or page and the response headers for each request. Filter requests to capture, filter requests to view

    Venu Madhav

    1,136 users

  • 🚀 Free YouTube: Обходите Блокировки

    🚀 Free YouTube: Обходите Блокировки

    Free YouTube — это расширение для браузера, которое решает вопросы, как обойти блокировку YouTube, и помогает ускорить его работу. Независимо от того, где вы находитесь, этот инструмент обеспечит стабильный доступ к платформе и улучшит её производите

    Free Founder

    1,135 users

  • CRX Installer

    CRX Installer

    Install Chrome extension to Zen/Firefox nightly/Librewolf

    FoxRefire

    1,127 users

  • GraphQL DevTools

    GraphQL DevTools

    Developer tools panel for GraphQL development

    Francesco De Stefano

    1,116 users

  • What CMS Is This

    What CMS Is This

    Detect which CMS a site is using with the help of WhatCMS.org

    Who Hosts This

    1,111 users