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

Log in

11,957 extensions found in Web Development

Filter results
Search results
  • Handy Screenshot

    Handy Screenshot

    Capture the web page, either part of it or full page. Edit your screenshots in a very user-friendly interface. Replacement of 'Awesome screenshot capture' and 'Nimbus Screenshot' Click on icon or Press Alt twice to take screenshots

    Taining

    1,465 users

  • Github Download Button

    Github Download Button

    Adds a download button on Github files

    Grooby

    1,464 users

  • Svelte Devtools

    Svelte Devtools

    Browser devtools extension for debugging Svelte applications.

    RedHatter271

    1,458 users

  • Quick Screenshot

    Quick Screenshot

    Quick screenshot of full webpage with single click.

    XtreamDev

    1,454 users

  • YouTube Background Play

    YouTube Background Play

    Keep YouTube videos playing when you switch tabs or minimize your browser. Perfect for listening to music or podcasts in the background.

    Felipe

    1,451 users

  • (Animated) Nyan Cat Progress Bar for YouTube™

    (Animated) Nyan Cat Progress Bar for YouTube™

    Nyan Cat Progress Bar for YouTube™ ~~ [Animated] ~~

    Ferris Etanish

    1,451 users

  • Web Developer Form Filler

    Web Developer Form Filler

    This extension is used by developers to make it easy to save and fill forms for use in submission testing and validation.

    Eric Busch

    1,446 users

  • Open in MS Edge™ Browser

    Open in MS Edge™ Browser

    Open current page, link, or all tabs in the Microsoft Edge™ browser

    Andy Portmen

    1,443 users

  • Ona – Move beyond your IDE

    Ona – Move beyond your IDE

    Ona is your mission control for serious software projects and parallel coding agents. Keep momentum with secure dev environments in our cloud or your VPC.

    Ona

    1,427 users

  • WindowSizer

    WindowSizer

    Quickly resize the window to one of your favorite sizes

    Dr. Cheap

    1,425 users

  • View Background Image

    View Background Image

    Adds "View Background Image" to the context menu.

    foooomio

    1,421 users

  • SubWallet - Polkadot Wallet

    SubWallet - Polkadot Wallet

    SubWallet is the comprehensive non-custodial wallet solution for Polkadot, Substrate & Ethereum ecosystems.

    SubWallet

    1,394 users

  • External Application Button (WebExtension)

    External Application Button (WebExtension)

    A highly customizable external application button and context-menu items

    Andy Portmen

    1,384 users

  • Window Resizer

    Window Resizer

    Resize the browser window. The resolution list supports customization.

    antwhere.com

    1,376 users

  • Pesticide, for Firefox

    Pesticide, for Firefox

    Kill your css layout bugs! Pesticide is an open source CSS tool created by Adam Morse and available for download, forking on Github at http://pesticide.io/

    Daniel Oshiro

    1,372 users

  • Cross Domain - CORS

    Cross Domain - CORS

    Cross Domain will help you to deal with cross domain - CORS problem. This is a small tool will helpful for web developer and related domain that face with cross domain issue.

    Mai Tan

    1,371 users

  • RemoveYouTubePause

    RemoveYouTubePause

    Remove the 'Video paused. Continue watching?' message on YouTube, allowing for a seamless video and audio experience without interruptions, on Firefox for both desktop and mobile.

    DevTiagoCruz

    1,365 users

  • Swagger UI

    Swagger UI

    Swagger-UI for Firefox

    Steven Tappert

    1,362 users

  • Copy URL To Clipboard

    Copy URL To Clipboard

    Copy document URL / link URL to clipboard as HTML, Markdown, Text etc.

    asamuzaK

    1,349 users

  • IndicateTLS

    IndicateTLS

    Displays negotiated SSL/TLS protocol version and additional security information in the address bar

    Jannis Pinter

    1,340 users

  • AInspector for WCAG Accessibility Evaluation

    AInspector for WCAG Accessibility Evaluation

    Inspects web pages for features and issues related to WCAG 2.2 level A and AA requirements for making web pages more accessible to people with disabilities using web accessibility standards, including WCAG, ARIA and ARIA in HTML specifications.

    Jon Gunderson

    1,316 users

  • Season Pass Pass

    Season Pass Pass

    Travel back in time and pull rewards from any previous season pass in destiny 2

    Evade

    1,314 users

  • Netmirror Extension

    Netmirror Extension

    Add, modify or remove a header for any request.

    Netmirror

    1,294 users

  • Katalon Recorder | Automated Selenium Tests Genera

    Katalon Recorder | Automated Selenium Tests Genera

    Selenium IDE alternative to record and export Selenium scripts. Provides reports & screenshots. Fast & open-sourced.

    Katalon.com

    1,273 users

  • Talisman Wallet

    Talisman Wallet

    The self-custody wallet for the next era of intelligent DeFi. One unified portfolio for Ethereum, Solana, Bittensor, Polkadot, and more.

    Talisman

    1,257 users