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

Log in

12,523 extensions found in Web Development

Filter results
Search results
  • Link Extractor

    Link Extractor

    Modern Web Extension to extract, parse, and open links from any site or text with optional filters.

    Shane

    2,028 users

  • Run JavaScript

    Run JavaScript

    Script injector for JavaScript and CSS!

    datttyt

    2,025 users

  • Chat GPT for Google

    Chat GPT for Google

    See the ChatGPT responses right next to your search engine results. https://extensionchatgpt.com/ See our youtube guide: https://www.youtube.com/watch?v=p9it2NCB3_c

    Chat GPT for Google

    2,001 users

  • Squarespace ID Finder

    Squarespace ID Finder

    Find the ids of collections, sections, and blocks on your Squarespace page. Works with both 7.0 and 7.1.

    Heather Tovey

    1,995 users

  • Yandex Wordstat Assistant

    Yandex Wordstat Assistant

    Расширение, позволяющее значительно ускорить сбор фраз с помощью сервиса подбора слов Яндекс (wordstat)

    SEMANTICA

    1,975 users

  • Pesticide

    Pesticide

    This extension inserts the Pesticide CSS into the current page, outlining each element to better see placement on the page.

    Six

    1,975 users

  • Fake Data - A form filler you won't hate

    Fake Data - A form filler you won't hate

    Fill form fields on the fly with fake random data. No configuration needed, just double click on each input you want to fill. Has an autolearn feature for unrecognised fields.

    Hater Apps

    1,971 users

  • FB unseen

    FB unseen

    Blocks the ”seen” feature of the facebook messenger, and your friends will no longer be able to see if you read their messages.

    Horizonsoft

    1,970 users

  • gooreplacer

    gooreplacer

    A browser extension to block/redirect URLs and modify headers

    Jiacai Liu

    1,957 users

  • Gaugr for Claude AI (Usage Tracker)

    Gaugr for Claude AI (Usage Tracker)

    Enhance your Claude AI experience with Super Claude - usages, notifications, and more!

    Pilote Code

    1,956 users

  • DotGit

    DotGit

    An extension to check if .git is exposed in visited websites.

    davtur

    1,944 users

  • Altair GraphQL Client

    Altair GraphQL Client

    A beautiful feature-rich GraphQL Client for all platforms.

    Samuel

    1,935 users

  • Resource Override

    Resource Override

    An extension to help you gain full control of any website by redirecting traffic, replacing, editing, or inserting new content.

    Kyle Paulsen

    1,928 users

  • Grepper

    Grepper

    The Query & Answer System for the Coder Community

    codegrepper.com

    1,921 users

  • Custom Style Script

    Custom Style Script

    Add custom JavaScript codes or styles to any page.

    Milen

    1,905 users

  • View Page Source (Mobile)

    View Page Source (Mobile)

    Adds the ability to open the page source in a new tab via button (Desktop) or menu (Firefox for Android).

    David Pacassi Torrico

    1,903 users

  • GraphQL Network Inspector

    GraphQL Network Inspector

    Simple and clean network inspector for GraphQL

    warrenjday

    1,903 users

  • Rotate that Video Player

    Rotate that Video Player

    Improve your video experience by effortlessly rotating your video clips by 90, 180, or 270 degrees.

    Stefan vd

    1,901 users

  • ICPBravoAccess

    ICPBravoAccess

    ICPBravo Access ICPBrasil and General PKI Extension.

    Scytl

    1,897 users

  • Copy Selected Tabs to Clipboard

    Copy Selected Tabs to Clipboard

    Provides ability to copy title and URL of selected tabs to the clipboard.

    Piro (piro_or)

    1,895 users

  • Clockwork

    Clockwork

    php dev tools integrated to your browser

    its

    1,878 users

  • HackBar

    HackBar

    A browser extension for Penetration Testing

    0140454

    1,861 users

  • Locale Switcher

    Locale Switcher

    Lets you quickly switch the browser locale to test localization on your website.

    Locale Switcher

    1,847 users

  • SEO Analysis & Website Review by WooRank

    SEO Analysis & Website Review by WooRank

    Instant SEO analysis and website reviews for SEO, mobile, usability and social media. The freshest data when and where you want it.

    WooRank

    1,807 users

  • LiveReload - Web extension

    LiveReload - Web extension

    Web extension based version of LiveReload. Supports Firefox 57 (Firefox Quantum)

    Todd Wolfson

    1,806 users