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

Log in

8,764 extensions found in Web Development

Filter results
Search results
  • Action Replay Pro

    Action Replay Pro

    Automate browser interactions by recording and replaying user actions.

    DA88

    10 users

  • BlurPage

    BlurPage

    Blur any element or paragraph on page

    Phuoc Nguyen

    10 users

  • 图片转换base64

    图片转换base64

    一个把图片转换base64格式的扩展。 选择图片 > 右键 > 转换base64 。如果成功，图片的base64格式编码将粘贴在剪贴板中。

    mjc188

    10 users

  • Scrawly

    Scrawly

    Draw on any web page with excalidraw.

    Luke Murray

    10 users

  • Better GitHub

    Better GitHub

    Enhance your code reading experience on GitHub.

    ceoshikhar

    10 users

  • DataShield Media Blocker

    DataShield Media Blocker

    Prevents download of third party media files (Video,Images,CSS,JS,Fonts) reducing data usage and increasing load times.

    3vcloud

    10 users

  • User agent override

    User agent override

    Gives the ability to set custom user agent string

    Nikola Glavina

    10 users

  • IP Change Notifier

    IP Change Notifier

    Tracks your IP address and notifies you if it changes.

    beau

    10 users

  • Song Lyric & Info Extractor

    Song Lyric & Info Extractor

    Extract Lyrics, Artist & Title from YouTube videos or sound files.

    XMG | Xeri Media Group

    10 users

  • Anchor Selector

    Anchor Selector

    To change URL hash, Click icon and select anchor element has id attribute.

    bgpat

    10 users

  • Classic Dungeon Game

    Classic Dungeon Game

    Play Classic Dungeon Game right on Your Fire Fox!

    blake skits

    10 users

  • Offline QR Code Generator PNG SVG

    Offline QR Code Generator PNG SVG

    Generate and save QR codes with various data types

    DotSlashGabut

    10 users

  • Alt & Meta viewer

    Alt & Meta viewer

    Some Alt attributes are used in conjunction with other elements. Some elements are used in conjunction with other elements.

    BJ88

    10 users

  • LetXPath

    LetXPath

    XPath Finder, simple and useful, open-source project by LetCode with Koushik

    Giới thiệu Fabet

    10 users

  • GSC - Extensão

    GSC - Extensão

    A extensão GSC-CFC é uma ferramenta poderosa e prática projetada para auxiliar no preenchimento automático de formulários no site de trânsito de Minas Gerais. Ideal para profissionais e usuários que buscam agilidade no processamento de informações.

    GSC GRUPO SE SOLUÇÕES COMPLETAS

    10 users

  • Prometheus-Monitor

    Prometheus-Monitor

    A live-viewer for services that expose metrics in the Prometheus-format.

    lucasdicioccio

    10 users

  • Free Temp Mail Service

    Free Temp Mail Service

    Create unlimited temp mail inboxes to receive emails from any site without using your personal email we made this extension to avoid spam in your personal mailbox.

    Tempinbox.xyz

    10 users

  • Stack Overflow and Stack Exchange Indentation

    Stack Overflow and Stack Exchange Indentation

    Adds Tab and Shift + Tab indentation controls to Stack Overflow and Stack Exchange.

    Pedro von Hertwig

    10 users

  • WPlaceTools 26.08.2025

    WPlaceTools 26.08.2025

    Cross-browser extension

    Hakimjon3d

    10 users

  • Decoder

    Decoder

    An Extension to decode any selected Base 64 text.

    Firefox user 14696955

    10 users

  • Google Font Live Preview

    Google Font Live Preview

    Pick a Google Font, choose a CSS selector, see what your website looks like with that font. Say goodbye to copy pasting embed code during development. :)

    dvsj.in

    10 users

  • ScreenDemos

    ScreenDemos

    Record demo videos for your product in seconds

    PopoDev

    10 users

  • Now TV 4ever

    Now TV 4ever

    Persist Now Tv cookies to remain signed in across sessions.

    Peter

    10 users

  • Node.js Highlighter

    Node.js Highlighter

    Highlights instances of 'Node.js' on the current website

    79king

    10 users

  • YouTube Watch Later Quick Remove

    YouTube Watch Later Quick Remove

    One-click remove button for YouTube Watch Later playlist

    stunl0ck

    10 users