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12,147 extensions found in Web Development

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  • PageSpeed Insights

    PageSpeed Insights

    Open PageSpeed Insights to analyze the web page on the current opened tab.

    Instwave

    854 users

  • ARC Toolkit

    ARC Toolkit

    Accessibility testing tool from TPGi

    TPGi

    849 users

  • JSON Viewer

    JSON Viewer

    Просмотр JSON файлов прямо в браузере

    li0ard

    844 users

  • Scan QR code

    Scan QR code

    Scan QR code through Webcam and screenshot

    ScanQRCode

    843 users

  • Discord Rich Presence

    Discord Rich Presence

    Discord rich presence extension with open API.

    lolamtisch

    840 users

  • Convert Case

    Convert Case

    Convert text in your browser between UPPER CASE, lower case and more.

    Convert Case Ltd

    838 users

  • Website and IP address blocker

    Website and IP address blocker

    Block Websites and IP address. Additional feature: Option to only block the homepage.

    Mohsin Dodhia

    836 users

  • Save Website as Image

    Save Website as Image

    Save a full snapshot of a website as a single or a series of images

    igorlogius

    833 users

  • Quick Accept-Language Switcher

    Quick Accept-Language Switcher

    Provides a quick way of changing the HTTP Accept-Language header so you can view and test websites with a different locale.

    Dan Callahan

    830 users

  • Load timer

    Load timer

    Displays page load time in the toolbar

    Alexander Vykhodtsev

    827 users

  • Simple Link Checker

    Simple Link Checker

    Redirect Link Checker will check all links on your page to find broken and redirect links

    Francesco De Stefano

    824 users

  • Open With Photoshop

    Open With Photoshop

    Open With Photoshop is a new companion for web and graphic designers to open up any web image with Adobe Photoshop via a single and quick mouse click.

    Baris Derin

    818 users

  • Blackfire Profiler

    Blackfire Profiler

    Profile your PHP application from your browser

    Blackfire

    815 users

  • React Context DevTool

    React Context DevTool

    React Context DevTool is a debugging tool for React Context and useReducer API.

    Deep Patel

    815 users

  • Neeno's Cookie Importer

    Neeno's Cookie Importer

    Import, export, edit, and backup cookies. Includes conflict resolution, cookie locking, advanced flag editing, session snapshots, and a secure review stage. Supports incognito and containers. The definitive session management tool.

    Neeno

    814 users

  • Disable CSP for a minute

    Disable CSP for a minute

    Temporarily disables CSP for the current tab's website. Right click on the page, then disable CSP.

    python273

    814 users

  • Tampermonkey Editors

    Tampermonkey Editors

    Online editor support for Tampermonkey's userscripts

    Jan Biniok

    809 users

  • Slither.io Mods, Zoom, Unlock Skins, Bots

    Slither.io Mods, Zoom, Unlock Skins, Bots

    The Best Mod and Extension for Slither.io! Mod Zoom, Play with Friends, Skins, Custom Skins, Bots

    Firefox user 13052225

    804 users

  • OpenLorem

    OpenLorem

    Lorem Ipsum filler text for web developers. Uses Loripsum, Bacon Ipsum and Dino Ipsum APIs to retrieve customized text. Insert into fields using context menu. Source code is available on Github.

    BojanK

    803 users

  • Transparent standalone images

    Transparent standalone images

    This add-on renders standalone images on a transparent background, so you can see the image in all its glory!

    Jared W

    798 users

  • LocalStorage Editor

    LocalStorage Editor

    Add, edit, copy, remove, export and import local- and session- storage data

    igorlogius

    798 users

  • Table Extractor - TableConvert

    Table Extractor - TableConvert

    Instantly convert tables on any webpage to multiple formats

    Fechin

    795 users

  • ClaudeCodeBrowser

    ClaudeCodeBrowser

    ClaudeCodeBrowser enables AI-powered browser automation through the Claude Code CLI. It allows Claude to interact with web pages by taking screenshots, clicking elements, typing text, scrolling, and navigating - all controlled via a local MCP server.

    nanogenomic

    792 users

  • WhatsApp Message Sender

    WhatsApp Message Sender

    Send personalized messages through WhatsApp™ Web.

    Yasya El Hakim

    773 users

  • Block Yourself from Analytics

    Block Yourself from Analytics

    Block your Google Analytics™ activity for the websites you own, no more false stats.

    Igor Jerosimić

    767 users