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

Log in

10,122 extensions found in Web Development

Filter results
Search results
  • withExEditor

    withExEditor

    From the context menu (right click), you can "View source" "View selection" or "Edit text" with your favorite editor.

    asamuzaK

    138 users

  • Image ALT

    Image ALT

    Check all image elements have an ALT attribute either empty for decoration or a accessible name.

    Deafinitive

    138 users

  • vt-autologin

    vt-autologin

    A Firefox-Extension for auto login to various pages. It can be used when building a kiosk-device.

    VANTAiO Development

    138 users

  • GrowthBook DevTools

    GrowthBook DevTools

    GrowthBook DevTools helps you debug feature flags and experiments and design A/B tests visually — all from your browser.

    GrowthBook

    138 users

  • Open in VSCode

    Open in VSCode

    Clone and open git repos from GitHub in VS Code.

    Youssef Atta'i

    137 users

  • CMS Backend Opener

    CMS Backend Opener

    Opens a new tab/window with backend-login of the CMS, which the current website is using. Just press [Alt] + [y]. Supported CMS's: Typo3, Joomla, WordPress, Drupal, Contao, WebsiteBaker, Weblication, CMSQLite and Oxid.

    Andy R.

    137 users

  • WebRequest Rules

    WebRequest Rules

    Customize web requests by coding JavaScript yourself.

    sycxyc

    137 users

  • Timestamp Decoder

    Timestamp Decoder

    Decodes unix timestamps into a human readable format

    noir04

    137 users

  • BrowserStack Toolbar Toggle

    BrowserStack Toolbar Toggle

    Toggles the toolbar in Browserstack Live and App-Live

    Abhi Singh

    136 users

  • Live HTTP headers

    Live HTTP headers

    Displays the live log with the http requests headers

    ircestudios

    136 users

  • RestMan

    RestMan

    RESTMan is a browser extension to work on http requests.

    OK365

    136 users

  • taba11y – Tab order accessibility tester

    taba11y – Tab order accessibility tester

    Visualise tab order with ease

    Peter Gould

    135 users

  • LocaProxy Toolbar

    LocaProxy Toolbar

    LocaProxy Toolbar is a free proxy manager and switcher for Firefox.

    LocaProxy

    135 users

  • NotExp

    NotExp

    This extension converts OneNote notes to Xournal++ and RNote notes with only a few clicks required.

    nico9889

    135 users

  • Netmon

    Netmon

    Network monitor - view the HTTP headers of the current page, or globally, from all tabs. You can use it at any time, also after the page has loaded.

    Konrad Papala

    135 users

  • Stay for Browser

    Stay for Browser

    Userscript manager compatible with Tampermonkey, Violentmonkey. Dark mode for every website. Stay synched on Chrome/Safari/Firefox.

    Stay Browser

    134 users

  • Dinyomage Autofill

    Dinyomage Autofill

    Smart autofill that saves and loads form data using website-specific profiles.

    dinyomage

    134 users

  • Pixel Ruler

    Pixel Ruler

    A ruler for measure something in a website. Just press Alt button in a website and move your mouse.

    anilsenay

    133 users

  • Cafi Certificado A3

    Cafi Certificado A3

    Assinatura de Documentos com Certificado A3

    Cafi

    132 users

  • IP to Country Flag & My IP- WhatIsMyIP.click

    IP to Country Flag & My IP- WhatIsMyIP.click

    IP to Country Flag - WhatIsMyIP.click Display the IP and Country information of the currently viewed website and also display your external IP address.

    Eria IO

    132 users

  • Cisco Web Communicator

    Cisco Web Communicator

    Enable Web applications integrated with Cisco Jabber voice and video to use the Cisco Web Communicator add-on.

    cisco.jabbersdk

    132 users

  • Advanced Web Text Extractor

    Advanced Web Text Extractor

    Extract, filter, and format text from web pages with advanced features

    Go88

    131 users

  • CSDN和知乎增强器

    CSDN和知乎增强器

    移除CSDN和知乎的复制限制和登录弹窗

    Jimmy Shine

    131 users

  • YouTube Ad Blocker

    YouTube Ad Blocker

    Blocks ads on YouTube.

    thenewmsy

    131 users

  • Snap Pixel Helper

    Snap Pixel Helper

    Snap’s Pixel Helper is a simple Browser Extension, which allows advertisers to verify, debug, and troubleshoot Snap Pixel implementations.

    Greg Varsanyi

    131 users