HTTP Headers Checker — fast
View HTTP response headers for any URL.
Server-Side Tool
HTTP Headers Checker requires making HTTP requests to external servers, which is blocked by browser security policies (CORS). This feature requires a server-side implementation.
Coming Soon
We are building a backend API to support this tool. Check back soon!
In the meantime, try these alternatives:
- Use browser developer tools (F12 → Network tab)
- Check online services like MXToolbox, Cloudflare Radar
- Use curl or wget from your terminal
How to use HTTP Headers Checker
Enter Your URL in the Input Field
Paste the complete URL (including https:// or http://) into the text input box at the top of the page. For example: https://example.com or https://example.com/page. Click the blue 'Check Headers' button to submit.
Review the HTTP Response Headers Table
View the results displayed in a table with two columns: Header Name and Header Value. Common headers include Content-Type, Cache-Control, Server, Set-Cookie, and X-Frame-Options. Scroll down to see all available headers returned by the server.
Analyze Key Header Information
Identify critical headers for your analysis: Status Code (200, 301, 404, etc.), Content-Length (file size in bytes), Last-Modified (last update date), and Security headers like Strict-Transport-Security. Use the 'Copy' button next to each header to copy individual values.
Export or Share Your Results
Click the 'Download Results' button to export headers as a .txt file, or use the 'Share' icon to generate a shareable link containing your checked URL and results for collaboration or documentation purposes.