HTTP Header Checker

HTTP response headers are metadata sent by a server alongside a requested resource, providing critical information about the connection, caching policies, and security settings. Checking these headers is essential for developers and SEOs to ensure that security protocols like HSTS are enabled, caching is optimized for performance, and redirects are functioning correctly.

Yes, this tool allows you to instantly diagnose server-side configuration errors, such as incorrect content-type headers, missing security headers, or misconfigured server-side redirects. By reviewing the raw header data, you can pinpoint exactly why a page might be failing to load properly or why search engine crawlers are encountering issues.

Properly configured headers, particularly those related to canonicalization, redirects (301 vs 302), and cache-control, have a significant impact on how search engines crawl and index your site. Using this checker helps you verify that your server is communicating the correct instructions to search engine bots, which can prevent indexing bloat and improve page load speeds.

Absolutely, our tool displays the full list of response headers, allowing you to easily verify the presence of critical security headers such as X-Content-Type-Options, Content-Security-Policy, and Strict-Transport-Security. Ensuring these headers are present is a best practice for protecting your users and meeting modern web security standards.

Yes, the tool clearly displays the status code returned by the server, allowing you to distinguish between a permanent 301 redirect and a temporary 302 redirect. This is vital for webmasters because using the wrong redirect type can lead to lost link equity or unintended indexing behavior in search results.