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

Log in

13,137 extensions found in Web Development

Filter results
Search results
  • FoxColorBox

    FoxColorBox

    Firefox extension that allows you to change and customize browser Window colors

    jftuga

    80 users

  • Fake geolocation with joystick

    Fake geolocation with joystick

    Add-on for faking geolocation with joystick

    typeling1578

    80 users

  • Devtools (DEPRECATED, DO NOT USE)

    Devtools (DEPRECATED, DO NOT USE)

    A Firefox extension that adds various developer relating tooling to the browser.

    Casperschorr

    80 users

  • ESMART Token Web Plugin

    ESMART Token Web Plugin

    ESMART Token Web Plugin allows to access PKCS#11 methods for signing, verifing, listing objects etc.

    ESMART® Addons

    80 users

  • HTML Tag Error Checker

    HTML Tag Error Checker

    Check the HTML start and end tags for problems.

    macha

    80 users

  • devtools-highlighter

    devtools-highlighter

    Find and highlight elements on the page with this DevTools panel, using CSS styles and selectors.

    Patrick Brosset

    80 users

  • Content Edit & Blur

    Content Edit & Blur

    Easily edit or blur elements on any webpage

    Hasan Abo-Shally

    79 users

  • Best Cookie Editor

    Best Cookie Editor

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

    Sumalya Chatterjee

    79 users

  • RDF Browser

    RDF Browser

    Request RDF files and render RDF files as Turtle documents with clickable links

    Kian Schmalenbach

    79 users

  • Get Facebook ID

    Get Facebook ID

    Get Facebook ID for Facebook pages. When the tab is a Facebook page, this tries to extract the ID that is used by the Facebook Graph API.

    Sworn

    79 users

  • CSP Tester

    CSP Tester

    This extension helps web masters to test web application behaviour with Content Security Policy version 2.0 implemented.

    oxdef

    79 users

  • fly63工具箱

    fly63工具箱

    一款在线高效实用工具箱，无需客户端在线一键使用。拥有近上百款工具包括:程序员在线文档、在线转换、加密解密、站长工具、代码开发、Css样式、文本工具、二维码处理、图片处理、生活办公、娱乐工具等等。

    fly63

    79 users

  • SEO Nofollow Links Highlighter

    SEO Nofollow Links Highlighter

    Highlight all nofollow links on any site you want. Excellent for SEO purposes.

    IdeaMAX

    79 users

  • Analytics Inspector

    Analytics Inspector

    Analytics Inspector, by true-metrics.com provide an easy way to validate web analytics and marketing integration.

    true-metrics.com

    78 users

  • Offline 2FA Generator

    Offline 2FA Generator

    Offline 2FA: Scan, Generate & Export QR Codes Securely

    George-Paul B.

    78 users

  • Panel Mobile

    Panel Mobile

    Displays a sidebar that allows you to view the mobile version of your web pages. Muestra una barra lateral que le permite ver la versión para móviles de sus páginas web.

    Martin Guadama

    78 users

  • KOSHIAN 返信フォームを固定

    KOSHIAN 返信フォームを固定

    レスフォームの位置を調整します !注意! 一度でもフォーム位置切替を行ってた場合フォームがちらつきます FirefoxのオプションのプライバシーとセキュリティのCookieを管理から img.2chan.netやmay.2chan.netのreszcというCookieを削除すると解決します

    Pachira

    78 users

  • PageMarkdown - Markdown Web Clipper

    PageMarkdown - Markdown Web Clipper

    Web clipper for pages. Export as Markdown, HTML, Word, EPUB, PDF and Screenshots. Batch ZIP download, AI refine, 3 capture scopes.

    ExileCode

    78 users

  • allWebPlugin.IE

    allWebPlugin.IE

    allWebPlugin.IE扩展是一款安全、可靠、易用的浏览器扩展，方便用户在谷歌、Edge、火狐等浏览器使用原来IE Web系统。allWebPlugin.IE扩展使用需下载并安装allWebPlugin中间件。

    yunkaipx

    78 users

  • xPath 2 & Robot framework commands

    xPath 2 & Robot framework commands

    Click on any element to get the xPath

    cuong-vm

    78 users

  • LaTeX From Web

    LaTeX From Web

    Copy LaTeX formulas from web pages with a hover and click.

    Manoj Aryal

    78 users

  • Fix Contrast

    Fix Contrast

    Make websites more readable automatically. Fix color contrast issues on websites automatically.

    Firstversionist

    78 users

  • GenPass - Smart password generator

    GenPass - Smart password generator

    GenPass - Smart password generator lets you to create a strong easy remembered password of high cracking resistance.

    Cursoria

    77 users

  • GitHub Writer

    GitHub Writer

    A WYSIWYG rich-text editor for GitHub issues, comments and pull requests. Powered by CKEditor.

    CKSource

    77 users

  • KISaD JSON Viewer

    KISaD JSON Viewer

    Viewer for large json files using cloud9's ace editor.

    Firefox user 12606043

    77 users