Web Developer Tools

Web Developer Tools is a modern, privacy-first toolbox for inspecting, debugging, editing, testing, optimizing, and analyzing websites without leaving your browser. The extension features 555 web development tools organized into intuitive categories, helping you analyze web pages faster and streamline your web development workflow. 🔒 PRIVACY FIRST : Your privacy comes first and is the most important aspect. Every tool on this extension runs entirely on-device, inspecting and modifying only the page you're actively working on inside your own browser — nothing is logged, tracked, or sent to our servers. We do not collect browsing history, keystrokes, analytics, or telemetry of any kind. Creating an account is completely optional and is only used to manage a Pro subscription. ➡️ CHANGELOG : New in v1.3.0 - v1.3.1 (August 2026) ✅ Internationalization : Extension is now available in 11 locales + UI/UX Improvements ➡️ CHANGELOG : v1.1.0 - v1.2.0 (July 2026) ✅ Improved design and UI/UX + Bug Fixes 🛠 FEATURES : • 🔍 HTML & DOM tools • 🎨 CSS inspection and editing tools • ⚙️ JavaScript debugging and analysis tools • 🌐 Network, request, and resource inspection • 💾 Storage, Cookies, Cache & IndexedDB management • 📈 SEO auditing and metadata analysis • ♿ Accessibility (WCAG) inspection tools • ⚡ Performance and Core Web Vitals analysis • 🔒 Security header and HTTPS inspection • 🖼️ Image, Form, and Responsive Design tools • 📱 PWA inspection and manifest validation • 🧩 Technology detection • 🎯 Color, typography, and design tools • 📄 Data formatting, generators, and validators • 🖥️ Browser environment and page utilities ✨ Why You'll Love It • ✅ 555 tools organized into intuitive categories • 🔒 Privacy-first — no unnecessary data collection • ⚡ Fast, lightweight, and easy to use • 🌍 Works directly in your browser • ⭐ Powerful free features with optional Pro upgrades Whether you're debugging layouts, inspecting HTML and CSS, testing accessibility, analyzing performance, reviewing metadata, managing browser storage, or troubleshooting websites, Web Developer Tools provides everything you need in one place.