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14,240 extensions found in Web Development

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  • Easy DNS lookup

    Easy DNS lookup

    Utility to do DNS lookups directly to DNS APIs and display the response in the addon.

    wesinator

    198 users

  • File System Access

    File System Access

    The File System Access API allows web apps to interact with files on the local device.

    sycxyc

    198 users

  • 🧚🏻‍♀️Copy Genie

    🧚🏻‍♀️Copy Genie

    Bypass web restrictions with one click and copy-paste freely.

    Spirit Fox Lab

    198 users

  • Viewport

    Viewport

    Displays the current viewport size when resizing the browser window.

    Kameron

    197 users

  • Detector Whats Font

    Detector Whats Font

    You can find out the font of a web page very easily.

    macha

    196 users

  • Email Tracker

    Email Tracker

    Professional Gmail tracking for Firefox with exact-recipient protection, cleaner open detection, and subtle Gmail status badges.

    YNS DEV

    194 users

  • WaybackURL

    WaybackURL

    Fetch all the URLs that the Wayback Machine knows about for a domain

    Hossein Shourabi

    194 users

  • Switch Direction

    Switch Direction

    Switch Direction in edits, useful for mixed RTL and LTR texts editing.

    ebraminio

    194 users

  • Media Extractor Pro

    Media Extractor Pro

    Extracts all .mp4 files from a webpage.

    Alice Sn0w

    194 users

  • Show-HTTP-Headers

    Show-HTTP-Headers

    Show HTTP headers in each tab.

    Warren Bank

    193 users

  • Auto Scroll

    Auto Scroll

    Automatically scroll pages at custom speed.

    Auto Scroll

    192 users

  • Histogram Viewer

    Histogram Viewer

    Generates the histogram of a selected image.

    David Fichtmueller

    192 users

  • Palette Creator

    Palette Creator

    Creates a color palette from any image. Just right-click on the image and select the 'Palette Creator' option.

    Daniel Perez Alvarez

    192 users

  • Mail Tracker Pro

    Mail Tracker Pro

    Advanced email tracking extension for Gmail. Track when your emails are opened and get real-time notifications.

    Himanshu Sharma

    192 users

  • かんたん文字数カウント

    かんたん文字数カウント

    選択したテキストの文字数を数えることができるFirefox アドオンです。 記事の文字数の確認や校正などにご活用ください。

    Masaki Wakatake

    192 users

  • Browserling - Cross-browser testing

    Browserling - Cross-browser testing

    Cross-browser test websites in the most popular browsers such as Internet Explorer, Edge, Chrome, Firefox, Safari and Opera. Try for free!

    Browserling

    191 users

  • EcoIndex.fr

    EcoIndex.fr

    Récupérer facilement les analyses Ecoindex faites sur une page grace au moteur ecoindex.fr

    Vincent Vatelot

    191 users

  • Kahuna, the IndexedDB-Manager

    Kahuna, the IndexedDB-Manager

    Browse, manage and edit IndexedDB databases.

    Hummmingme

    190 users

  • a11y.css accessibility checker

    a11y.css accessibility checker

    a11y.css provides warnings about possible risks and mistakes that exist in HTML code through a style sheet. This extension also provides several accessibility-related utilities. see https://github.com/ffoodd/a11y.css/tree/webextension for details

    Stephane Deschamps

    190 users

  • Disable WebP Images

    Disable WebP Images

    Disables WebP images by removing image/webp from Accept header

    John Galt

    189 users

  • Reveal Password

    Reveal Password

    A simple utility to see auto-filled saved passwords with double click on any page. Double click the password and it should show as a plain text.

    NightSurfer

    189 users

  • Draw.io MCP Extension

    Draw.io MCP Extension

    Draw.io MCP Extension providing services to Draw.io MCP Server

    Ladislav

    189 users

  • Textern

    Textern

    Edit text in your favourite external editor!

    Jonathan Lebon

    189 users

  • WordPress Theme Detection - ThemeDetect.com

    WordPress Theme Detection - ThemeDetect.com

    Find out which theme a WordPress site is using with the help of ThemeDetect.com

    Who Hosts This

    188 users

  • The Hell is Connections Roblox

    The Hell is Connections Roblox

    Replaces 'Connections' with 'Friends' on any Roblox page

    thebonkeybruh

    188 users