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Web Developer Tools

  • Web Developer - Web Developer extension adds a toolbar button to the browser with various web developer tools.

  • Firebug Lite for Google Chrome - Firebug Lite - a port of the popular Firebug for Google Chrome.

  • JSON Formatter - Makes JSON easy to read. Open source.

  • CSS Peeper - Extract CSS and build beautiful style guides.

performance testing

  • Lighthouse - Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.

  • Page Load Timer - Displays page load time in the toolbar.

  • Performance-Analyser - Get insight into the performance of the website in the current tab.

seo & analysis

  • SEOquake - SEOquake is a free plugin that provides you with key SEO metrics, along with other useful tools such as SEO Audit and many others.

  • Wappalyzer - Wappalyzer is a technology profiler that shows you what websites are built with.

  • Google Analytics Debugger - Prints useful information to the JavaScript console by enabling the debug version of the Google Analytics Javascript.

  • MozBar - The all-in-one SEO toolbar for research on the go.

accessibility testing

  • WAVE Evaluation Tool - Evaluate web accessibility within your browser.

  • Web Accessibility Testing - Accessibility Checker for Developers, Testers, and Designers in Chrome.

  • HeadingsMap - To show, browse and audit (for accessibility and SEO) the headings structure.

  • Accessibility Insights for Web - Accessibility Insights for Web helps developers quickly find and fix accessibility issues.

security testing

  • OWASP Penetration Testing Kit - OWASP Penetration Testing Kit.

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

  • HackBar - A browser extension for Penetration Testing

api testing

  • Postman Interceptor - Capture requests from any website and send them to Postman Client.

  • Yet Another REST Client - YARC (Yet Another REST Client) is an easy-to-use REST Client. Use it to develop, test and debug RESTful APIs.

  • Chrome Web Store - An extension that supports Advanced REST Client session management reading Chrome cookies.

  • Boomerang - SOAP & REST Client - Seamlessly integrate and test SOAP & REST services.

cross-browser testing

  • User Agent Switcher - Simplest way to switch between user-agents in your browser!

  • IE Tab - Display web pages using IE within Chrome. Use Java, Silverlight, ActiveX, Sharepoint, and more.

  • Responsive Tester - Test responsive web designs or mobile pages and see if it is mobile friendly.

screenshot & recording

  • Awesome Screen Recorder & Screenshot - The best screen recorder and screen capture & screenshot tool to record screen.

  • Nimble capture - Capture FULL page screenshots. Edit and save screenshots. Record screencasts - record video from your screen. Record how-to guides.

  • Take Webpage Screenshots Entirely - Take FULL webpage screenshots. Capture, edit and save them to PDF/JPEG/GIF/PNG, upload, print, send to OneNote, clipboard or email.

debugging

  • React Developer Tools - Adds React debugging tools to the Chrome Developer Tools.

  • Vue.js devtools - Browser DevTools extension for debugging Vue.js applications.

  • Redux DevTools - Redux DevTools for debugging application's state changes.

  • Angular DevTools - Angular DevTools extends Chrome DevTools adding Angular specific debugging and profiling capabilities.

colour & design

  • ColorZilla - Advanced Eyedropper, Colour Picker, Gradient Generator and other colourful goodies.

  • WhatFont - WhatFont helps you identify the font on a web page, html font size, colour, font family.

  • Scope Master - Accurate Pixel Measurement Tool for Web Elements and Pages - Free & Efficient!

  • Dimensions - You will like Dimensions as it allows you to measure elements on a page in pixels, like a page ruler.

productivity

  • LastPass: Free Password Manager - LastPass is an award-winning password manager for secure credential management on any device.

  • Grammarly: AI Writing and Grammar Checker App - Improve your writing with all-in-one assistance—including generative AI, grammar check, and more.

  • Todoist for Chrome - Organize work and life with Todoist for Chrome.

version control

  • GitHub Repository Size - Automatically adds repository size to GitHub's repository summary.

  • GitZip for github - It can make the sub-directories and files of github repository as zip and download it.

  • Sourcegraph - Adds code intelligence to GitHub, GitLab, and other hosts: hovers, definitions, references. For 20+ languages.

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