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

Log in

11,958 extensions found in Web Development

Filter results
Search results
  • HeaderTweaker

    HeaderTweaker

    Lightweight browser extension that lets you easily modify outgoing HTTP headers

    Maurice

    3 users

  • Web Proxy Server

    Web Proxy Server

    Using Web Proxy Server: Secure your browsing with a proxy server for each tab.

    ExtAddon

    3 users

  • Linker

    Linker

    Generates a QR code for the current tab's URL.

    Himanshu77K

    3 users

  • GrabMyIP

    GrabMyIP

    This Firefox extension displays the user's public IP, location, city, ISP and country flag in a tooltip when the extension icon is clicked.

    vexxed

    3 users

  • Stackoverflow Snippets

    Stackoverflow Snippets

    Quickly find code snippets from StackOverflow on your search results

    imDarkempire

    3 users

  • Website Performance Analyzer Tool

    Website Performance Analyzer Tool

    Adds a DevTools panel that audits performance, accessibility, best practices, and SEO.

    Hikasami

    3 users

  • Dro.pics Screenshot

    Dro.pics Screenshot

    Screenshot, Annotate & Upload

    01e9

    3 users

  • Xbox Live Tools

    Xbox Live Tools

    Access Xbox Live tools and features with a single click.

    XboxLiveTools

    3 users

  • 跨境精灵云-Quick Link

    跨境精灵云-Quick Link

    中企跨境专用（云设计器，网站制作，快捷功能）等内容。

    中企跨境-林剑伟

    3 users

  • Make GitHub Great Again

    Make GitHub Great Again

    Speed up GitHub by converting it to an MPA

    joshmoody24

    3 users

  • Django Redirect

    Django Redirect

    Automatically redirects to Django documentation to a specified version.

    JetBlackPope

    3 users

  • Elements highlighter

    Elements highlighter

    Highlights items by css class prefix or attribute name

    Egor Ivanov

    3 users

  • Dynamic links

    Dynamic links

    Adds configurable links to better navigate through web configurators.

    Danda

    3 users

  • Akamai Debug Helper

    Akamai Debug Helper

    Inject Akamai pragma headers and show CDN response details.

    M4n0x

    3 users

  • Alternative Copy

    Alternative Copy

    Copies a shortened shareable link of the current tab's address to the clipboard (default: Alt+C, mac: Option+C).

    Ehryk

    3 users

  • Link Selector Opener

    Link Selector Opener

    A simple browser extension that lets you select and open multiple links at once using various selection modes.

    Pavel Savitsky

    3 users

  • Are my third parties green?

    Are my third parties green?

    Check any web page to see if the third-party services being used are being served from verified green web hosts.

    Fershad Irani

    3 users

  • BountyHunter WCD-XSS

    BountyHunter WCD-XSS

    This addon is sending requests to the 0.0.0.0:5000 adress to detect XSS via Web Cache Deception vulnerability

    httpnotonly

    3 users

  • GitHub Diff Explorer

    GitHub Diff Explorer

    The GitHub Diff Explorer is a minimalist browser add-on which generates a seamless file explorer in GitHub pull requests.

    Alex D

    3 users

  • Switch Host Extension

    Switch Host Extension

    Switch between different hosts quickly.

    greyplay

    3 users

  • SVG Finder Pro

    SVG Finder Pro

    Find, edit, and download SVGs from any webpage with ease. Export SVGs in SVG, PNG, or JPEG formats.

    R.Sabbir

    3 users

  • IP Subnet Calculator

    IP Subnet Calculator

    Fast IP Subnet Calculator - Calculates network, broadcast, host range, mask and more. Works for IPv4.

    Michał Sibilski

    3 users

  • SEO Analyzer for TPT

    SEO Analyzer for TPT

    Get SEO scores, keyword suggestions, and ranking tips for your TPT products—all from one powerful browser extension.

    SEO Mantis

    3 users

  • MOYP - Mantle of your privacy (Скрытность в сети)

    MOYP - Mantle of your privacy (Скрытность в сети)

    Скрывайте свои персональные данные вместе с MOYP, которые в фоновом режиме получает ваш браузер. Устанавливайте расширение и наслаждайтесь большей свободой. Hide your personal data from everyone using MOYP.

    Shaman

    3 users

  • SafeScope

    SafeScope

    SafeScope - Web Security Analysis Extension SafeScope is a Firefox browser extension that analyzes the security of websites.

    CyberLee

    3 users