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

Log in

11,521 extensions found in Web Development

Filter results
Search results
  • Open in CodeSandbox

    Open in CodeSandbox

    Adds an 'Open in CodeSandbox' button to GitHub repos.

    CodeSandbox

    23 users

  • Mixpanel Data Inspector

    Mixpanel Data Inspector

    Test and validate your Mixpanel setup directly in your browser – see events in real time and confirm everything is tracked correctly.

    Mixpanel

    23 users

  • Google AI Slop Cleaner

    Google AI Slop Cleaner

    Adds specific terms from Google search queries to filter as much AI slop as possible. At least it should.

    Gerg0Vagyok

    23 users

  • Indicate TLS Pro v2

    Indicate TLS Pro v2

    Enhance your browsing security with Indicate TLS Pro v2! This Firefox addon displays the TLS protocol version of every website you visit, keeping you informed and aware of your online connection's safety.

    Cynthia Bell

    23 users

  • Archivarix Cache Viewer

    Archivarix Cache Viewer

    View cached versions of web pages in various web archives (Wayback Machine, Yandex Cache, Archive.is, Arquivo.pt)

    Archivarix

    23 users

  • EditPDFree - Free PDF Tools

    EditPDFree - Free PDF Tools

    Access 30+ free PDF tools instantly. Merge, compress, convert, edit PDFs - all in your browser. 100% free, no signup needed.

    EditPdfREE

    23 users

  • mRequestControl

    mRequestControl

    mRequestControl is a Firefox Plugin which lets you manipulate the responses of HTTP requests.

    mahe

    23 users

  • New TAB Redirect

    New TAB Redirect

    Redirects all pages to a specific URL.

    UNKNOWN

    23 users

  • YouTube Tag Extractor

    YouTube Tag Extractor

    Extract tags, title, and download thumbnails from YouTube videos

    TagExtractor.in

    23 users

  • Session Switcher

    Session Switcher

    A Firefox extension for switching between sessions

    Fanes Pratama

    23 users

  • SiteIP

    SiteIP

    Displays the actual IP address of the server for the current site.

    VAAR

    23 users

  • Strava Cookie Exporter

    Strava Cookie Exporter

    Show and export Strava cookies for use with strava-heatmap-proxy

    Patrick Ziegler

    23 users

  • JSON Viewer

    JSON Viewer

    A beautiful, customizable JSON/JSONP viewer and highlighter. Open-source fork: github.com/Lysak/json-viewer

    Dmytrii Lysak

    23 users

  • ShowMyIP

    ShowMyIP

    Show your current IP address.

    xanhacks

    23 users

  • Dark Mode Cyberpunk

    Dark Mode Cyberpunk

    Apply a dark, cyberpunk-style theme to all websites.

    namideus

    23 users

  • SwaggerAuthenticator

    SwaggerAuthenticator

    Automate API-Key authentication in swagger.

    Indogermane

    23 users

  • Diff HTTP

    Diff HTTP

    Diff the network traffic in real-time to observe the URLs variant over time.

    limkokhole

    23 users

  • DNSSEC Checker

    DNSSEC Checker

    Check DNSSEC for domain

    ООО "Единый интегратор Uzinfocom"

    23 users

  • One Click Salesforce Login

    One Click Salesforce Login

    Enables you to login in SalesForce (Force.com) with one click.

    Sumit Banarji

    23 users

  • ImageSlim: Image Resizer

    ImageSlim: Image Resizer

    Instantly resize and optimize images in your browser. Save storage space and improve website loading times with just a few clicks.

    Getinfotoyou

    23 users

  • Remove Duplicated Linebreaks from Text Area

    Remove Duplicated Linebreaks from Text Area

    Provides a context menu item to remove duplicated linebreaks, on a text area.

    Piro (piro_or)

    23 users

  • Request Header Modifier

    Request Header Modifier

    Modify and review request headers for specified websites

    Jamie van Brunschot

    23 users

  • Site Spy

    Site Spy

    Track and monitor website changes with this web extension

    Vitaly Kuprin

    23 users

  • DITM

    DITM

    DITM: Developer In The Middle is an extension that allows you to modify the web server's response in place, to investigate the issues on web site.

    arai_a

    23 users

  • CSP B Gone

    CSP B Gone

    Check the CSP of the current website against a list of known bypasses.

    Hacks and Hops

    23 users