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

Log in

12,250 extensions found in Web Development

Filter results
Search results
  • ProxyFlow Containers

    ProxyFlow Containers

    Control proxies by Firefox Container, no-container tabs, private windows, and site rules, with HTTPS speed testing.

    kadimo

  • Hack Font Everywhere

    Hack Font Everywhere

    Renders all text on web pages using the Hack typeface.

    Hack Font Everywhere

    1 user

  • Word Count

    Word Count

    Displays the number of characters on the current web page.

    KUWIN

    1 user

  • Sign-Up Profile Filler

    Sign-Up Profile Filler

    Save profiles and auto-fill sign-up forms with one click.

    ZsTechLabs

    1 user

  • InfoBlend

    InfoBlend

    Definitions, translations, summaries, and AI page Q&A on any site. Double-click a word, press Ctrl+K, or right-click to translate. Works without an API key.

    Suhaib

  • Onipat v3.09.3-release-2 Liquid Prism

    Onipat v3.09.3-release-2 Liquid Prism

    Capture every image, explore everywhere. This is Onipat.

    Phúc Power

    1 user

  • Localhost Shortcut

    Localhost Shortcut

    Open localhost ports from the Firefox address bar using the l keyword.

    Kees Kroep

    1 user

  • Porkbun Search Price Filter

    Porkbun Search Price Filter

    Filters Porkbun search results by purchase and renewal price

    glazs

    1 user

  • NSE Option Chain → CSV Exporter

    NSE Option Chain → CSV Exporter

    NSE Option Chain data ko ek click mein CSV file mein export karo.

    Uday-Rajput

    1 user

  • Discussed - HN, Reddit with AI Summaries

    Discussed - HN, Reddit with AI Summaries

    Find HN, Reddit & Lobsters discussions about any page. Summarize community insights with AI.

    discussed.dev

    1 user

  • Distraction-Free Browser

    Distraction-Free Browser

    Hide distracting content on YouTube, Facebook, and TikTok.

    TintAungKhant

    1 user

  • Sanity Check

    Sanity Check

    Analyze job ads against your skills and preferences, identify warning signs, and get a private, local second opinion before applying.

    DBax

  • Site Script Saver

    Site Script Saver

    Save and reuse JavaScript or CSS for specific websites.

    Rihanna

    1 user

  • hostinfo

    hostinfo

    Receive information of a domain directly in the browser when browsing a website

    albert

    1 user

  • Savior

    Savior

    A devtool for easily exporting requests that can be shared with developers

    Eline H

    1 user

  • PostPro AI - Grow on LinkedIn!

    PostPro AI - Grow on LinkedIn!

    Predict LinkedIn post virality and enhance your content before publishing. AI-powered analysis for better engagement and reach. Grow your LinkedIn presence with AI-powered content intelligence.

    Sumanth

    1 user

  • Lhamacorp Proxy Client

    Lhamacorp Proxy Client

    Provides authentication for SOCKS5 proxy servers that use JWT. The extension automatically manages the auth lifecycle, eliminating the need for users to manually update proxy credentials when tokens expire.

    dbohry

    1 user

  • Dev to Hero

    Dev to Hero

    Color-codes JS docs by difficulty. 100% free, no account, no AI — runs entirely in your browser.

    Anthony YAMMINE

  • Rins Slendro Auto Generator

    Rins Slendro Auto Generator

    Membantu otomatisasi pembuatan video di Slendro StoryTell Pro dari daftar ide TXT, lalu menyimpan video dan metadata secara berurutan.

    Dzarin

  • Gescore Broker

    Gescore Broker

    Allows for efficient and secure extraction of specific data from DOM elements on web pages.

    Gescore Broker

    1 user

  • UserScript Pro: Custom JS & CSS

    UserScript Pro: Custom JS & CSS

    A premium, minimalist developer tool to inject custom JavaScript and CSS into any website. Features a boutique workspace with Ace Editor, real-time injection, and advanced URL matching.

    aitchess

    1 user

  • Halo — Presenter Cursor

    Halo — Presenter Cursor

    Presenter mode for your cursor — glowing ring and trail for screencasts, demos, and live coding.

    Nellie

    1 user

  • Session Switcher 2

    Session Switcher 2

    Manage multiple accounts on the same site. Save, switch, restore complete sessions (cookies + storage) with one click. Local-first, keyboard-first, no telemetry.

    ErFlaher

    1 user

  • D365 Dev Tools

    D365 Dev Tools

    Unofficial developer toolkit for Microsoft Dynamics 365 Finance Operations and Business Central.

    Dimas Syauqi

  • OIDC Devtool

    OIDC Devtool

    Debug OIDC/OAuth2 auth flows — works standalone or with the Ping SDK

    Ryan bas

    1 user