HTTP Header Checker inspects the response headers your server sends whenever a user or bot visits. By revealing status codes, content types, caching rules, and redirection steps, it ensures that your site’s back-end handshake is correct. Marketers and developers rely on this to confirm 301 or 302 redirects, proper caching directives, or security headers like Strict-Transport-Security. If something’s amiss—like accidental 404 codes or misapplied redirects—this tool flags it. Maintaining consistent, correct headers ensures that search engines interpret your site’s structure accurately and that users receive the right content without unexpected errors.