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13,863 extensions found in Web Development

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  • Light MD Viewer

    Light MD Viewer

    View and edit Markdown files directly in your browser with syntax highlighting, mermaid diagrams, and split editor.

    Hayyarden

    24 users

  • PeekCSS

    PeekCSS

    Inspect and copy CSS, images, colors, fonts, and assets on any webpage.

    Leon Grass

    24 users

  • Transcript GPT

    Transcript GPT

    Copy raw conversation text from ChatGPT conversations.

    thereisnodevhere

    24 users

  • ColorDojo: Eyedropper Tool & Color Picker

    ColorDojo: Eyedropper Tool & Color Picker

    Eyedropper tool and color picker extension: pick colors privately, copy OKLCH, match Tailwind v4, and check contrast.

    Caravaca Labs

    24 users

  • ShowMyIP

    ShowMyIP

    Show your current IP address.

    xanhacks

    24 users

  • GatherTube

    GatherTube

    Gather all open YouTube video tabs into a single queue for seamless watching

    Karim Elgazar

    24 users

  • Gridt

    Gridt

    A highly customizable CSS Grid overlay for web developers

    gavink

    24 users

  • 网页版输入法

    网页版输入法

    这是一个简易的网页版输入法，主要在docker安装的浏览器里面使用,shift键:切换中英状态,ctrl键:切换成英文状态

    apoy

    24 users

  • Jira Dark Mode (DEPRECATED)

    Jira Dark Mode (DEPRECATED)

    DEPRECATED - Jira now has built-in support for dark mode :) --- Dark mode for Atlassian Jira. URL must match *.atlassian.net/*.

    Datahjelpen AS

    24 users

  • YouTube Thumbnail Downloader

    YouTube Thumbnail Downloader

    Adds a clean hover button on YouTube thumbnails to view, download, or copy the full-resolution image (maxresdefault.jpg). Works on channel pages, search, and video pages.

    Ryan Aby

    24 users

  • AI Page Translator

    AI Page Translator

    Translate web pages using AI (OpenRouter API). Powered by LLMs like Gemini 3, Claude 4.5, GPT-5 and more.

    BlcSzha!

    24 users

  • Testsigma Recorder

    Testsigma Recorder

    Swiftly record E2E interactions with your web applications and store the actions in plain English-based tests directly on the cloud.

    Testsigma Technologies Inc

    24 users

  • Autoclicker HTML Extension

    Autoclicker HTML Extension

    Automatically clicks an HTML element by tag and text. Search for elements that may appear later (like popups) and click them automatically.

    rahul

    24 users

  • Text Replacer: Find & Replace Anywhere

    Text Replacer: Find & Replace Anywhere

    Find and replace text on any web page: page content, inputs, forms & emails. Word replacer with match case, whole word & regex.

    Caravaca Labs

    24 users

  • mh-devtools

    mh-devtools

    Inspect network requests like DevTools

    mohamed

    24 users

  • Third-party cookies

    Third-party cookies

    Sample extension which demonstrates how to access a preference.

    Pro Brains

    24 users

  • ChatGPT Search For FF

    ChatGPT Search For FF

    Change default search engine to ChatGPT search. ChatGPT Search For FF integrates ChatGPT's AI capabilities directly into your browser's search functionality, providing intelligent, conversational responses alongside traditional search results.

    David Mir

    24 users

  • GhostPrint

    GhostPrint

    Randomize your browser fingerprint to protect your privacy, similar to Brave Browser's native protection.

    StellaXD

    24 users

  • Cookie Sweep

    Cookie Sweep

    Clear all cookies except for defined domains

    Markus Popp

    24 users

  • Code Formatter

    Code Formatter

    Beautify code instantly in Firefox. No more minified CSS, compressed JSON, or unreadable source code—this extension automatically detects and formats it all with syntax highlighting.

    sparkle_64

    24 users

  • xDevTools - Developer Utilities

    xDevTools - Developer Utilities

    Access 1,000+ developer tools. Format, convert, encode, and debug code directly from your browser.

    xDevTools

    24 users

  • Lenny Faces Keyboard

    Lenny Faces Keyboard

    Lenny Faces keyboard helps you create and copy/paste Lenny Faces to anywhere.

    Firefox addon Free

    23 users

  • Y2Matecom

    Y2Matecom

    Convert and download your favorite YouTube videos to MP3, MP4 with a single click!

    Developer

    23 users

  • Mobile Simulator Extension MSIM: Responsive Viewer

    Mobile Simulator Extension MSIM: Responsive Viewer

    Professional mobile device simulator with multiple views, extensive device library, and sync scrolling

    Mobile Simulator (MSIM)

    23 users

  • Network Logger - HAR Exporter

    Network Logger - HAR Exporter

    Capture network requests across all tabs and export as a HAR file — no DevTools needed. Perfect for debugging and shaCapture network requests from regular Firefox web pages Support cross-page and cross-tab recording Export standard HAR1.2 ring logs

    syunnrai

    23 users