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11,547 extensions found in Web Development

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  • ARIA DevTools

    ARIA DevTools

    Easily spot missing ARIA labels, misused ARIA roles, and incomplete keyboard support in your web applications.

    Mateusz Zieliński

    385 users

  • AutoComplete Forms for Firefox

    AutoComplete Forms for Firefox

    Enable AutoComplete for Form elements automatically.

    Baris Derin

    383 users

  • Cookie Editor - Extended

    Cookie Editor - Extended

    Simple yet powerful Cookie Editor that allow you to quickly create, edit and delete cookies without leaving your tab.

    Warren Bank

    383 users

  • TwineHacker

    TwineHacker

    Allows you to change font/style; also adds cheats

    biah

    381 users

  • HTML to Figma: Convert Websites into Designs

    HTML to Figma: Convert Websites into Designs

    Convert any webpage into an editable design or wireframe. Export to Figma, SVG, PNG, or JPG.

    Wireframeit

    380 users

  • LLMFeeder - Web to Markdown for AI

    LLMFeeder - Web to Markdown for AI

    Convert web pages to clean Markdown for ChatGPT, Claude and AI. Multi-tab support, right-click menus, token counter. 100% offline.

    jatinkrmalik.com

    380 users

  • User Agent

    User Agent

    Change your user agent QUICKLY and EASILY! Our extension includes SEVERAL ADVANCED methods of user-agent spoofing! To test its efficiency: https://webbrowsertools.com/useragent/

    SandVPN

    379 users

  • Cookie Popup Blocker

    Cookie Popup Blocker

    Automatically blocks cookies and cookie consent popups

    Sumalya Chatterjee

    377 users

  • CSP Evaluator

    CSP Evaluator

    CSP Evaluator is a tool that allows developers to check if a Content Security Policy (CSP) serves as mitigation against XSS attacks. This is a Firefox port of the Chrome extension

    Hacks and Hops

    374 users

  • LocatorJS

    LocatorJS

    A Firefox extension that allows you to click through from your React app to its code.

    Michael Musil

    374 users

  • Enable Select Copy +Edit

    Enable Select Copy +Edit

    A toolbar button to enable selection, copy and typing editing web text redirectly in a tab

    GarryW

    374 users

  • HTTP Status Code

    HTTP Status Code

    Shows HTTP response status code as a badge icon in the toolbar.

    Ahmad Samiei

    374 users

  • ActiveFlash

    ActiveFlash

    Modify the navigator.platform while simulating a mobile viewport

    李先生

    373 users

  • MM3 Proxy Switch

    MM3 Proxy Switch

    In the Firefox Browser (and other Mozilla programs) you can per default configure only the setting for one internet connection. With this Proxy Switch you can manage different configurations and simply switch over between these.

    MM3Tools

    371 users

  • Sheets Row Highlighter

    Sheets Row Highlighter

    Highlight a row (and column) of current cell in Google Sheets and Microsoft Excel Online.

    matsu7089

    371 users

  • OLI Grid CSS

    OLI Grid CSS

    Draws a grid on top of a website.Highly Customizable. useful for checking designs that are supposed to follow a grid-based layout. ex:Bootstrap,Foundation,Skeleton,Yaml...

    Kushan Gunasinghe

    371 users

  • Request Interceptor

    Request Interceptor

    Firefox extension to intercept and edit HTTP requests - now a mini Burp-like toolkit. Add rules, smart proxy routing, Intruder scans, Analytics, and URL Analyzer. Built for pentesters and developers. Dedicated to me and my dear memory SGFubmE=.

    Vahe Demirkhanyan

    369 users

  • OpenSwitchMaps

    OpenSwitchMaps

    Switch map services, and some useful links for OpenStreetMap contributors

    tankaru

    368 users

  • Easy Favicon Scraper

    Easy Favicon Scraper

    Download the favicon of a website with 1 click

    iSheepie

    368 users

  • DesignPicker - Color Picker & Font Detector

    DesignPicker - Color Picker & Font Detector

    A smart developer tool that supports color picking and font detecting, making develop design easier.

    Ahey

    368 users

  • Tanaguru

    Tanaguru

    Webpage Evaluation Tool.

    Tanaguru

    368 users

  • Stark Accessibility Checker

    Stark Accessibility Checker

    Find and fix compliance issues in record time with automated checks and smart suggestions.

    Stark Lab, Inc.

    365 users

  • User Agent Switcher

    User Agent Switcher

    Change your user agent easily. Allows custom user agent based on domain

    thewheat

    364 users

  • HybridTvViewer

    HybridTvViewer

    With this add-on, your browser will not download HbbTV/CE-HTML/BML/OHTV web pages (i.e. iTV applications) but will provide a simulator enabling underneath technological features (OIPF,DVB,...)

    Karl

    363 users

  • Foxy SEO Tool

    Foxy SEO Tool

    Foxy SEO Tool offers tools for search engine optimization (SEO), web traffic and page analysis for webmasters and web professionals.

    McNulty

    361 users