HTTP Header Viewer
Description
HTTP Header Viewer inspects response headers from any URL, displaying status codes, content types, caching directives, and security headers.
Use Cases
Web development: Debug HTTP response headers
Security: Audit security headers
Performance: Check caching and compression headers
API testing: Inspect API response headers
SEO: Verify canonical and redirect headers
Instructions
Enter the URL to inspect
Click the fetch button
View all response headers
Check the HTTP status code
Analyze security and caching headers
Notes
- Some headers may be blocked by CORS
- Redirect chains are followed automatically
- Both request and response headers are shown
- HTTPS headers are fully supported
FAQ
Why can I not see some headers?
CORS restrictions may block certain headers. Server-side inspection may be needed for complete data.
What do security headers mean?
Headers like CSP, HSTS, and X-Frame-Options indicate security configurations. Missing headers may indicate vulnerabilities.