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

Log in

9,157 extensions found in Web Development

Filter results
Search results
  • All Images Downloader

    All Images Downloader

    Download and view all images from a webpage with a single click.

    onii.com

    35 users

  • Chameleon-new

    Chameleon-new

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

    chameleon legacy

    35 users

  • CORS Unblock

    CORS Unblock

    Web apps cross-origin access with precise domain control and simple permissions.

    rxliuli

    35 users

  • Lenny Faces Keyboard

    Lenny Faces Keyboard

    Lenny Faces keyboard helps you create and copy/paste Lenny Faces to anywhere.

    Firefox addon Free

    34 users

  • SVG Navigator

    SVG Navigator

    Adds zooming and panning capabilities to SVG files

    Peter Ryszkiewicz

    34 users

  • security.txt

    security.txt

    Displays the security.txt and humans.txt files for a website if available.

    harmless.systems

    34 users

  • Scrutinizer for GitHub and Bitbucket

    Scrutinizer for GitHub and Bitbucket

    This addon makes available Scrutinizer analysis results and code intelligence directly inside the GitHub and Bitbucket websites.

    Scrutinizer

    34 users

  • Save Your Chat

    Save Your Chat

    🚀 Download Claude, Perplexity, ChatGPT and Google knowledge into markdown files! You can save ai chat to Obsidian and Craft.

    Steven

    34 users

  • Evernote Idea Saver

    Evernote Idea Saver

    A Mozilla extension to save ideas directly to Evernote.

    Javier Gordon

    34 users

  • Apollo Inspector

    Apollo Inspector

    Apollo Inspector is a firefox extension designed for the open-source GraphQL client, Apollo Client. This tool is particularly useful for debugging various issues related to GraphQL operations in Apollo Client.

    DevDelta

    34 users

  • Webpage Email Collector and Saver

    Webpage Email Collector and Saver

    Extracts emails from all or current tab. Can export them as text file list.

    XtreamDev

    34 users

  • Script for Me

    Script for Me

    A tiny userscript manager. Injects JavaScript code (and CSS code) into a page. A simple wrapper for the browser.contentScripts API. Works on Android as well as on PC. ウェブページにスクリプト（CSSも可）を注入する拡張機能。browser.contentScripts APIの単純なラッパー。Androidでも機能します。

    yobukodori

    34 users

  • SteamBuyer

    SteamBuyer

    get cookie

    Andry

    34 users

  • Bootstrap Deprecated Classes Extension

    Bootstrap Deprecated Classes Extension

    Bootstrap Deprecated Classes Extension allows developers to easily spot old Bootstrap deprecated classes in a website by highlighting them in the page.

    Julien Déramond

    34 users

  • Criteo Sourcegraph Editor

    Criteo Sourcegraph Editor

    Push gerrit reviews directly from Sourcegraph results

    Criteo - sourcegraph editor team

    34 users

  • Print this page

    Print this page

    Adds a print button to the browser.

    ircestudios

    34 users

  • Autorefresh on Error

    Autorefresh on Error

    Autorefreshes page after 3 seconds if page did not load.

    Zain Irshad

    34 users

  • KonvaJS Devtools

    KonvaJS Devtools

    Devtools for your Konva App

    Duc Trung Mai

    34 users

  • Cewsag - CSS Viewer

    Cewsag - CSS Viewer

    Cewsag: Elevate your web experience! This CSS viewer extension unveils the style intricacies of any webpage instantly. Simplify design exploration with Cewsag's intuitive insights and take control of web aesthetics effortlessly.

    Sammobadi

    34 users

  • Bigger URL bar

    Bigger URL bar

    Bigger URL bar with multiple lines by @h43z. Press CTRL+Shift+L to open URL bar, hitting ESC or making it loose focus will hide it again. Extension code only injects itself when needed.

    h43z

    34 users

  • Image Resizer

    Image Resizer

    Rescale multiple images into different sizes in a single step

    Chandler Stimson

    34 users

  • Open in Mermaid editor

    Open in Mermaid editor

    Open embedded diagrams in a Mermaid editor Supported editors: mermaid.live Supported diagrams: mermaid.ink, kroki.io Source code at https://github.com/serverwentdown/open-in-mermaid-editor

    Ambrose Chua

    34 users

  • Apache Cordova online CordovaIDE

    Apache Cordova online CordovaIDE

    Develop Android apps and games over an android emulator online using the Apache Cordova IDE.

    MyAndroid

    34 users

  • Highlighty: Search, Find, Multi Highlight

    Highlighty: Search, Find, Multi Highlight

    Searching and Multi Highlighting made effortless! It's the most efficient way to find and highlight any text on the web.

    Highlighty

    34 users

  • Clear Website Data

    Clear Website Data

    Clear cookies, storage, cache, and more from the current tab — all with one click.

    Shasika Semasinghe

    34 users