Overview
Premium CORS testing tool. Inspect status codes, response headers, and CORS policies for any URL β fast and beautifully presented.
π CORS Tester β The Premium CORS Inspection Tool for Developers Tired of fighting with Access-Control-Allow-Origin errors? π© Meet CORS Tester β the fastest, most beautiful way to debug CORS issues directly from your browser! β‘ β¨ Why You'll Love It π― One-Click Request Testing Pick your HTTP method (GET, POST, PUT, DELETE, HEAD, OPTIONS, PATCH), paste a URL, and hit Send. That's it! π¦ π Color-Coded Status Verdicts Instantly see what happened: π’ 2xx β Success π‘ 3xx β Redirect π΄ 4xx / 5xx β Error π Smart CORS Analysis Get an automatic verdict on whether the endpoint is: π Publicly accessible (any origin) π Restricted to specific origins π« No CORS configured at all π Full Response Headers Table Every header returned, with CORS-relevant ones highlighted for quick scanning. π¨ π Recent URL History Your last 10 tested URLs stored locally for instant re-testing. πΎ π Copy as cURL One click to copy the exact request as a cURL command β perfect for sharing with your team or pasting into your terminal. π» πΌοΈ Premium Landscape UI A gorgeous 900Γ600 popup with smooth gradients, soft shadows, and buttery transitions. Debugging has never looked this good! π π Privacy First π‘οΈ Zero tracking. Zero analytics. Zero third-party calls. The extension only sends the URLs you explicitly type. Your data stays yours. π€ π¨βπ» Built for Developers Whether you're: ποΈ Building APIs and need to verify CORS configs π Debugging "Why is my fetch blocked?!" errors π¬ Auditing third-party endpoints π Learning how CORS actually works β¦CORS Tester is your new best friend. β€οΈ βοΈ Technical Details β Manifest V3 compliant β Chrome 108+ β No external dependencies β Lightweight & blazing fast ποΈ π Install now and never guess at CORS headers again! π
Details
- Version1.0.0
- UpdatedMay 8, 2026
- Size57.95KiB
- LanguagesEnglish (United States)
- DeveloperWebsite
Email
Roomikat@gmail.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
CORS Tester has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.
CORS Tester handles the following:
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
Support
For help with questions, suggestions, or problems, visit the developer's support site
