HTTPS Header Response Checker

HTTP Header Checker – Inspect Response and Request Headers Online

Use this free HTTP Header Checker to view HTTP response headers and request headers for any URL. It’s a quick way to debug redirects, caching, security policies, and server configuration directly in your browser.

Developers, SEOs, and system administrators can use the HTTP header tool to understand how a server responds, verify CDN behavior, and diagnose misconfigurations without needing a separate command-line client.

What the HTTP Header Checker Does

The HTTP Header Checker sends a request to the URL you provide and shows you:

• Response headers (e.g., Server, Content-Type, Cache-Control, Content-Encoding).
• HTTP status code and status text (e.g., 200 OK, 301 Moved Permanently, 404 Not Found).
• Redirect chain so you can see each step in the journey from original URL to final destination.
• Optional request headers (such as user-agent) that the tool sends along with the request.

It’s a simple way to inspect how your site responds to visitors, bots, and crawlers at the HTTP level.

How to Check HTTP Headers

1. Open the tool
   Visit HTTP Header Checker.
2. Enter a URL
   Type or paste the full URL you want to inspect, including the protocol (for example, https://www.example.com/).
3. Run the check
   Click the button to fetch headers. The tool will perform the request and display the HTTP status and header fields.
4. Review the results
   Look through the headers to verify caching, redirects, compression, security policies, and more. Follow any redirect chain to see intermediate responses.

Why Inspect HTTP Headers?

SEO and Redirects

Search engines care about HTTP status codes and redirects. The HTTP Header Checker helps you:

• Confirm 301 vs 302 redirects.
• Verify canonical URLs and preferred domains (www vs non-www).
• Inspect Location headers and redirect chains.

Caching, Performance, and CDNs

Performance tools and CDNs rely on correct headers. By checking your headers, you can:

• Review Cache-Control, Expires, and ETag headers.
• Confirm Content-Encoding (e.g., gzip, br) for compression.
• See if a CDN or reverse proxy is adding its own headers.

Security Headers

Security headers help harden your site against attacks. Use the HTTP Header Checker to verify:

• Strict-Transport-Security (HSTS)
• Content-Security-Policy (CSP)
• X-Frame-Options, X-Content-Type-Options, and related headers

Spot missing or misconfigured security headers quickly and plan updates to your server or application configuration.

Typical Use Cases

• Confirming that new redirects have been configured correctly.
• Testing staging vs production server responses.
• Verifying CDN caching behavior and cache-control rules.
• Checking header changes after server or framework upgrades.

Related Diagnostics and Developer Tools

• URL List Cleaner – Clean, deduplicate, and normalize lists of URLs before testing headers.
• URL Link Splitter – Parse URLs into scheme, host, path, and query parameters for deeper debugging.
• HTTP Status Codes Reference – Look up the meaning of common HTTP status codes.
• Developer Conversion Tools – Number base, encoding, and other useful utilities for developers.

FAQ – HTTP Header Checker

Does this tool follow redirects?

Yes, the checker can follow redirects and show each step in the redirect chain, including status codes and Location headers.

Does it show both request and response headers?

The focus is on response headers returned by the server, but the tool can also display key request headers so you understand what was sent.

Can I use this for HTTPS and HTTP URLs?

Yes. You can inspect headers for both HTTPS and HTTP endpoints, as long as the URL is publicly accessible.

Is the HTTP Header Checker free?

Yes. You can run as many checks as you like directly in your browser, free of charge.