HTTP Headers Checker
NEWView all HTTP response headers from any URL — security headers, caching policies, content type, CORS settings, and more.
Fetching headers...
| Header | Value |
|---|
→ Send output to:
Advertisement
How to use HTTP Headers Checker
- Enter a URL (e.g. https://example.com).
- Click Check Headers to fetch the response headers.
- Review all headers in the table below.
What is HTTP Headers Checker?
HTTP response headers convey important metadata about a web server’s response — content type, caching rules, security policies (CSP, HSTS, X-Frame-Options), CORS settings, and server information.
This tool fetches headers from any URL using a direct request or a CORS proxy fallback, displaying them in a clean table for analysis.
Advertisement
FAQ
- What are HTTP headers?
- HTTP headers are key-value pairs sent by a web server with each response. They control caching, security policies, content encoding, cookies, and more.
- Why use a CORS proxy?
- Browsers block cross-origin requests by default. A CORS proxy fetches the headers server-side and relays them to your browser.
- What security headers should I check for?
- Look for Strict-Transport-Security (HSTS), Content-Security-Policy (CSP), X-Frame-Options, X-Content-Type-Options, and Referrer-Policy.
Related tools
Last updated: