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

Log in

281 extensions found in Web Development

Filter results
Search results
  • Custom Embedded YouTube Video

    Custom Embedded YouTube Video

    Fully customize the look of embedded YouTube videos on any site. Make YouTube videos blend seamlessly with your website’s design. You can adjust elements of the YouTube player to make it unrecognizable, providing a fully tailored, integrated look.

    Zer0

    20 users

  • FoxyPGP

    FoxyPGP

    PGP integration for web browsers

    FoxRefire

    20 users

  • Webpage Eraser

    Webpage Eraser

    Erase selected visible elements from the current webpage.

    Warren Bank

    20 users

  • bugfight

    bugfight

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

    bit bot

    20 users

  • Purplemonkey2

    Purplemonkey2

    Just like Violentmonkey, but with more unsafe API.

    gholk

    19 users

  • URI Splitter

    URI Splitter

    Easily and quickly edit the URL/URI from the current page

    Denilson Sá Maia

    19 users

  • 大盘云图-股票

    大盘云图-股票

    大盘云图是一款直观展示A股市场整体情况的热力图工具，帮助投资者快速获取股票涨跌、流通市值等信息，适合日常关注股市动态和复盘分析。

    面壁投资

    19 users

  • Best Cookie Editor

    Best Cookie Editor

    View, modify or delete browser cookies. Absolutely open-source.

    Sumalya Chatterjee

    18 users

  • CloneElement-InstantCSS

    CloneElement-InstantCSS

    Clone a Webpage Elements and Instantly Apply CSS

    JanishPancholi

    18 users

  • Data Extraction - G TECH

    Data Extraction - G TECH

    This Plugin Extracts the Data about the products from the Chinese MarketPlace and saves that data in the form of CSV file and in the DATABASE. You can also Download the CSV file.

    IKRAM KHAN

    18 users

  • Meta No User-Scalable

    Meta No User-Scalable

    Adds the meta viewport tag only to sites that don't have it, and disables user scalable for all sites.

    Piggy Gaming

    18 users

  • Disable WebP Images

    Disable WebP Images

    Disables WebP images by removing image/webp from Accept header

    John Galt

    17 users

  • Sitemod.io

    Sitemod.io

    Sitemod lets anybody modify a website without having access to the source code and get a shareable link to the modified website.

    BreezB

    17 users

  • GitHub Repository Size

    GitHub Repository Size

    Displays the size of a GitHub repository on its homepage

    Pranav Mangal

    17 users

  • Secure Passwords

    Secure Passwords

    Instantly generate robust and unique passwords with a single click.

    Tatami

    16 users

  • GitHub Pages 404

    GitHub Pages 404

    Provides links to Owner's Profile and GitHub Repo on a GitHub Pages 404 page.

    Harsh Narayan Jha

    15 users

  • One Click W3C Markup Validation

    One Click W3C Markup Validation

    Sends the current page to the W3C Markup Validation Service.

    tr-wp.com

    15 users

  • SwiftRead Lite

    SwiftRead Lite

    Speed reading extension for Firefox

    Nguyễn Văn Trình

    15 users

  • Go Up

    Go Up

    This browser extension jumps to the upper directories of the current URL

    tomarin

    15 users

  • Image compare

    Image compare

    Compare images in quality

    Janghou

    14 users

  • Tab Closer

    Tab Closer

    A simple extension to close tabs with specified URL

    AD Nguyen

    14 users

  • Unacademy Watermark Remover

    Unacademy Watermark Remover

    Remove annoying account watermark from Unacademy hosted videos

    Sahil Ahuwalia

    13 users

  • Bluesky Moderation Extension

    Bluesky Moderation Extension

    A Firefox extension to assist with moderation on Bluesky, allowing users to block others and manage block lists efficiently. Enhance your Bluesky experience with improved control and security.

    BDRAW

    13 users

  • amo-info

    amo-info

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

    William Durand 🌟

    13 users

  • V2Ray Link Converter

    V2Ray Link Converter

    V2Ray Link Converter

    Valas

    12 users