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

Log in

12,590 extensions found in Web Development

Filter results
Search results
  • Crayon: custom CSS injector

    Crayon: custom CSS injector

    Write CSS rules for any website

    Morgân von Brylân

    1 user

  • D2 lang Editor for Confluence

    D2 lang Editor for Confluence

    Edit and preview D2 diagrams directly on Confluence pages

    Oleg Veschin

    1 user

  • Text Uppercase Lowercase Tool

    Text Uppercase Lowercase Tool

    Convert text to uppercase, lowercase, or title case directly in the browser popup.

    Loan Anh

    1 user

  • Keyword Alert System

    Keyword Alert System

    Receive alerts when predefined keywords appear on a page.

    Antony

    1 user

  • Click Assistant

    Click Assistant

    Automatically clicks buttons, especially for automating SSO login (e.g., login, submit).

    This could be you

    1 user

  • Easy Refresh

    Easy Refresh

    Elegantly refresh pages on your schedule. Custom intervals, random timing, cache clearing, multi-tab refresh, and more.

    Elesari Labs

    1 user

  • Ghost API

    Ghost API

    Ghost API: Real-time Payload and Network Sniffer

    Abdelrahman Ashraf

    1 user

  • Video Compressor Local

    Video Compressor Local

    ضغط الفيديوهات محلياً دون رفعها للإنترنت باستخدام FFmpeg WebAssembly

    kamel

    1 user

  • X Blue Badge Blocker

    X Blue Badge Blocker

    スレ主を緑枠で保護し、それ以外の青バッジをブロックします（大文字小文字対応・安全装置付き）

    ッッ

    1 user

  • NEXUS — All-in-One Browser Suite

    NEXUS — All-in-One Browser Suite

    Tab manager, privacy shield, reader mode, notes, focus timer, password vault, screenshot, and developer tools — all in one extension.

    Vortex

    1 user

  • TradingView Wishlist Panel

    TradingView Wishlist Panel

    A modern, dark-themed wishlist panel for TradingView charts with keyboard navigation and smooth animations

    Mahesh Varma

    1 user

  • Salesforce OmniLogin

    Salesforce OmniLogin

    Salesforce OmniLogin is a free and Open Source Web Browser extension which allows to store and manage Salesforce orgs logins from the browser using then standard OAuth2 Flow.

    Javier Martínez de Pissón Caruncho

    1 user

  • Advanced Color Picker

    Advanced Color Picker

    Pick colors from web pages, copy hex codes, and more.

    Zomclub Poker

    1 user

  • Cafenet Nerkh

    Cafenet Nerkh

    کافی نت اکبری هستم: 09050775012 - 09389474877 ابزاری برای مدیریت مشتریان و ردیابی فعالیت‌های روزانه در کافی‌نت. شمارش کلیک‌ها، ورودی‌ها، تایپ، آپلود و زمان هر سایت به تفکیک مشتری و ارائه‌ی فاکتور نهایی به‌صورت خودکار.

    کافی نت آوش اکبری

    1 user

  • Resizer & Cropper

    Resizer & Cropper

    Firefox extension to crop, flip, and enlarge images with automatic background color matching.

    Krz S

    1 user

  • PasteFox

    PasteFox

    Share code and text snippets to PasteFox directly from Firefox. Select text, right-click, and create a paste with one click.

    FlexKleks

    1 user

  • DiffKit

    DiffKit

    Redirect selected GitHub URLs to matching DiffKit routes.

    Alan Daniel

    1 user

  • carbon-llm, AI CO₂e estimator

    carbon-llm, AI CO₂e estimator

    Estimate ChatGPT & LLM CO₂e per reply (Claude, Gemini, Mistral, Grok). No account needed. Private metadata-only.Estimates CO₂e per AI reply on ChatGPT, Claude, Gemini, Mistral & Grok: sidebar/panel shows grams CO₂e using token metadata

    Clem

    1 user

  • Simple Screenshot Tool

    Simple Screenshot Tool

    Erstellt einen Screenshot den man Beschneiden und mit Pfeilen, Markierungen und Text versehen kann.

    DigiNerd

    1 user

  • Auto Refresher By JSR

    Auto Refresher By JSR

    Advanced auto-refresher with per-tab control, multi-tab mode, and human-like behavior simulation.

    Jayant

    1 user

  • FangDefang

    FangDefang

    A browser extension for security professionals to defang and fang URLs, domains, IPs, and emails

    Gi7w0rm

    1 user

  • Save Tabs for Later

    Save Tabs for Later

    Save your open tabs as workspaces and restore them later with one click.

    Ngoc Vu Vo

    1 user

  • Gizli Sekmede Aç (Open İncognito)

    Gizli Sekmede Aç (Open İncognito)

    Haram işlere kullanmaya rızam yok. Gizli Sekmede Açar. İstersen geçmişten de temizler. Hatta sekmeyi bile kapatır. Mühim: Bu eklentiyi kullanabilmen için Gizli Pencerelerde Çalışabilir seçeneğini eklenti ayarlarından açmalısın; Bak yoksa çalışmaz!!!

    tokturbey

    1 user

  • HTML, CSS, JS Validator

    HTML, CSS, JS Validator

    The utility checks and fixes HTML, CSS, and JavaScript errors on websites.

    Martin Sullivan

    1 user

  • freheSwipe

    freheSwipe

    Single‑finger swipe gestures for Back, Forward, and Reload — smooth touchscreen navigation for laptops, tablets, and 2‑in‑1 devices.

    freheCode

    1 user