CORS Tester

Premium CORS testing tool. Inspect status codes, response headers, and CORS policies for any URL — fast and beautifully presented.

🌐 CORS Tester — The Premium CORS Inspection Tool for Developers Tired of fighting with Access-Control-Allow-Origin errors? 😩 Meet CORS Tester — the fastest, most beautiful way to debug CORS issues directly from your browser! ⚡ ✨ Why You'll Love It 🎯 One-Click Request Testing Pick your HTTP method (GET, POST, PUT, DELETE, HEAD, OPTIONS, PATCH), paste a URL, and hit Send. That's it! 🚦 📊 Color-Coded Status Verdicts Instantly see what happened: 🟢 2xx — Success 🟡 3xx — Redirect 🔴 4xx / 5xx — Error 🔍 Smart CORS Analysis Get an automatic verdict on whether the endpoint is: 🌍 Publicly accessible (any origin) 🔒 Restricted to specific origins 🚫 No CORS configured at all 📋 Full Response Headers Table Every header returned, with CORS-relevant ones highlighted for quick scanning. 🎨 🕘 Recent URL History Your last 10 tested URLs stored locally for instant re-testing. 💾 📎 Copy as cURL One click to copy the exact request as a cURL command — perfect for sharing with your team or pasting into your terminal. 💻 🖼️ Premium Landscape UI A gorgeous 900×600 popup with smooth gradients, soft shadows, and buttery transitions. Debugging has never looked this good! 💎 🔐 Privacy First 🛡️ Zero tracking. Zero analytics. Zero third-party calls. The extension only sends the URLs you explicitly type. Your data stays yours. 🤝 👨‍💻 Built for Developers Whether you're: 🏗️ Building APIs and need to verify CORS configs 🐛 Debugging "Why is my fetch blocked?!" errors 🔬 Auditing third-party endpoints 🎓 Learning how CORS actually works …CORS Tester is your new best friend. ❤️ ⚙️ Technical Details ✅ Manifest V3 compliant ✅ Chrome 108+ ✅ No external dependencies ✅ Lightweight & blazing fast 🏎️ 🎉 Install now and never guess at CORS headers again! 👇