To use Android extensions, you'll need Firefox for Android. To explore Firefox for desktop add-ons, please visit our desktop site.

Log in

878 extensions found in Web Development

Filter results
Search results
  • GlassPad - A Note Taking App

    GlassPad - A Note Taking App

    A dark glassmorphism notepad with MS Word features.

    Sumalya Chatterjee

    9 users

  • Signstr: A Nostr Signer for your Browser

    Signstr: A Nostr Signer for your Browser

    Fork of Alby's lightning browser extension modified to work without logging in, specifically for signing nostr events.

    Abhay

    9 users

  • CSS Spec

    CSS Spec

    Calculate CSS specificity for any selector instantly

    Sansone Janeth

    9 users

  • Tenure – Zero-Click Website Age Checker

    Tenure – Zero-Click Website Age Checker

    Zero-click website age detection right in your search results. Spot newly registered domains before you click. No accounts, no tracking, no data collection. Powered by 600+ IANA-approved RDAP servers.

    MrWebMD

    9 users

  • SGPA Predictor

    SGPA Predictor

    Automatically calculates SGPA from Contineo student portal marks.

    AS

    9 users

  • Insecure Links Highlighter

    Insecure Links Highlighter

    Highlight insecure links such as ‘http://example.org’. Useful for web development and as a very basic heuristic for site security.

    Victor Engmark

    8 users

  • SEO Web Analyzer

    SEO Web Analyzer

    Comprehensive on-page SEO analysis with 50+ checks, batch analysis, mobile audit, accessibility, i18n, and more.

    synligwebb.se

    8 users

  • SEO SkyView

    SEO SkyView

    Get a quick SEO overview of any webpage with just one click. SAVE THOUSANDS ON SEO AGENCY FEES.

    vidolimo

    8 users

  • chromify

    chromify

    Switches User-Agent string to mimic latest Chrome on Android 13 on a Pixel 5 device.

    csalaki

    8 users

  • GitHub Enhancer

    GitHub Enhancer

    Shows clean date format next to relative time on GitHub

    myst25

    8 users

  • MorphAgent

    MorphAgent

    MorphAgent: Instantly spoof user agent & touch points in Firefox. 130+ profiles, per-site rules, privacy-focused.

    KARTHIK LAL

    8 users

  • Instagram Unfollower Tool by venosq

    Instagram Unfollower Tool by venosq

    İnstagram unfollow tool takip edilenleri ve takipçileri çeker

    Murat Karademir

    8 users

  • Gifify – Smart GIF Viewer

    Gifify – Smart GIF Viewer

    Yorumlardaki GIF linklerini embed eden eklenti

    Can Şenbaş

    8 users

  • Email or Login Filler

    Email or Login Filler

    Sometimes your browser's password manager fails to autofill email or login fields? Sync and fill email, login, or name fields when autofill doesn’t work. Simple, fast, and private.

    Przemysław Stańczyk

    8 users

  • Tab Closer

    Tab Closer

    A simple extension to close tabs with specified URL

    AD Nguyen

    8 users

  • Prezi Watermark Blocker

    Prezi Watermark Blocker

    Blocks Prezi watermark and shows a browser notification

    ishan oshada

    8 users

  • Better GitHub Co-Authors

    Better GitHub Co-Authors

    Adds a button to GitHub pull requests to make it simple to add co-author credits for all PR participants before merging.

    delucis

    8 users

  • AI AdBlocker (for Android)

    AI AdBlocker (for Android)

    AI AdBlocker for Firefox Android. Build using background scripts (no service worker) Blocks obvious ad containers + simple heuristics; no remote calls. Bundles ONNX Runtime Web locally(WASM only); no CDN, No data collection, no telemetry.

    eye3

    8 users

  • Amrcode.id Cookie Export

    Amrcode.id Cookie Export

    Ekstensi untuk mengambil cookie dari website aktif

    Somone

    8 users

  • GitHub Manager Upload and Download

    GitHub Manager Upload and Download

    A powerful Firefox add onn that lets you upload folders to GitHub and download repositories as ZIP files all without using Git commands

    Shivam Shukla

    8 users

  • MetaHTTPMask Headers

    MetaHTTPMask Headers

    View and search HTTP response headers for any endpoint

    Jenni

    8 users

  • Video Editor - By Mr.Bear

    Video Editor - By Mr.Bear

    Professional video editing suite right in your browser. Timeline editing, effects, transitions, text overlays, audio mixing, and export capabilities - complete video production for Firefox.

    Mr.Bear

    8 users

  • Young Domain Guard

    Young Domain Guard

    Alerts you when visiting a website with a recently registered domain name (< 30 days). Protects against phishing and scam sites using RDAP lookups.

    IlianAZZ

    8 users

  • ShkoloTweaks (BETA)

    ShkoloTweaks (BETA)

    Customize your Shkolo experience with ShkoloTweaks! Dark mode, Custom widgets, Cool Stats, and more!

    DimitarVlM

    7 users

  • B & S For KEY

    B & S For KEY

    A lightweight and practical add-on that adds quick action buttons to web pages for faster form interactions.

    Mehdi

    7 users