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

Log in

5,902 extensions found in Web Development

Filter results
Search results
  • User Agent Spoofer

    User Agent Spoofer

    Advanced, modern user agent spoofer

    grimsteel

    22 users

  • bugfight

    bugfight

    The first BiteFight bot for Google Chrome and Firefox! Automate your adventure!

    bit bot

    22 users

  • Chameleon-new

    Chameleon-new

    Spoof your browser profile. Includes a few privacy enhancing options.

    chameleon legacy

    22 users

  • px-to-em-converter

    px-to-em-converter

    Online/Offline calculator for your custom EM needs.

    Kushan Gunasinghe

    22 users

  • Open Graph Previewer

    Open Graph Previewer

    Preview how your website will look on social media with every Open Graph configuration, instantly.

    Ruben

    22 users

  • Newtube (YoutubeStyleCustomizer)

    Newtube (YoutubeStyleCustomizer)

    A tool for YoutTube that have a lot customizable and easy to use. You can use it by not have to know about code.

    AzPepoze

    22 users

  • Page-Abstractor

    Page-Abstractor

    Simplifies web pages by unifying colors and fonts, and removing images, controls, and tables. This add-on helps users focus on reading, copying, printing, or saving text content, providing a cleaner and distraction-free browsing experience.

    Pedram GANJEH-HADIDI

    22 users

  • Luminate Online Page Editor

    Luminate Online Page Editor

    This extension makes it easier to edit pages on your organization's Luminate Online website.

    Noah Cooper

    21 users

  • table-sort-js

    table-sort-js

    Make the tables of websites you visit sortable!

    Lee Wannacott

    21 users

  • Erase Cookies Now

    Erase Cookies Now

    Delete all cookies for a website with a single click.

    Geoffrey De Belie

    21 users

  • Sizzy

    Sizzy

    The responsive design browser (sizzy.co)

    Sizzy

    21 users

  • Анализ мобильной версии сайта

    Анализ мобильной версии сайта

    Расширение позволяет просматривать в удобном формате страницы сайта в эмуляторе мобильного устройства.

    Alexander Pomozov

    21 users

  • Ghost It

    Ghost It

    Easily make unwanted web elements invisible

    Tony Fischetti

    21 users

  • MarkIIBrowserLog - InfoTrace Mark II

    MarkIIBrowserLog - InfoTrace Mark II

    本アドインは、InfoTrace MarkIIのブラウザ操作ログ取得のための拡張機能です。

    MasatoshiHayashi

    21 users

  • Simple IP Calculator

    Simple IP Calculator

    Determine network details based on an ip and a netmask/CIDR.

    Omar E. Ferrer

    21 users

  • Fire Page Editing

    Fire Page Editing

    Inject HTML, CSS or JavaScript into any web-page. The changes you make are applied everytime you visit the specified website(s).

    Francesco De Stefano

    21 users

  • ANTAQ Pro

    ANTAQ Pro

    Plataforma Eletrônica de Atividades da Agência Nacional de Transportes Aquaviários - ANTAQ

    ANTAQ

    21 users

  • RESTBolt

    RESTBolt

    Browser WebExtension to work on http(s) requests.

    Francesco De Stefano

    21 users

  • ParamScan

    ParamScan

    Passively check for every reflecting parameter in the visiting page.

    Chiyo

    21 users

  • FB Cookie

    FB Cookie

    Copy cookie on Facebook with one click

    rancho

    21 users

  • The Image Downloader

    The Image Downloader

    This is a browser extension designed to download images from a list of URLs.

    Mr. Rainbow

    21 users

  • Rettiwt Auth Helper

    Rettiwt Auth Helper

    A browser extension for authenticating Rettiwt-API.

    Rishikant Sahu

    21 users

  • requests-recording-tool

    requests-recording-tool

    Provides with an easy way to record and output to file all requests issued by websites! Also allows to encrypt files with our public key.

    Firefox user 13982089

    21 users

  • GitHub Original Streak

    GitHub Original Streak

    An add-on that gets back current and longest streak on Github profiles

    Naramsim

    21 users

  • Headers Middleman

    Headers Middleman

    Add, remove, or modify HTTP Headers for any request based on a regular expression

    ClareTor

    21 users