What does the HTTP Header Checker tool do?

The HTTP Header Checker tool sends a lightweight request to a URL and shows the HTTP status code, server type, content-type, caching rules and key security headers that the website returns.

Is the HTTP Header Checker free to use?

Yes. The HTTP Header Checker on PowerSEOTools.online is completely free to use with no registration or usage limits.

Does the tool follow redirects?

Yes. The tool follows common HTTP redirects so you can see the final destination URL and the headers returned by the final response.

Does it download the full page content?

No. The tool performs a HEAD-style request to fetch only the HTTP response headers. This makes it faster and avoids downloading the full HTML or assets.

Which headers are highlighted?

The tool highlights important headers like Content-Type, Server, Content-Length, Cache-Control and common security headers such as Strict-Transport-Security, X-Frame-Options and Referrer-Policy.

HTTP Header Checker - View HTTP Response Headers Online

Header	Value
No headers yet. Run a check to see results.

Free Online HTTP Header Checker

The HTTP Header Checker from PowerSEOTools.online helps you understand how your website responds at the protocol level. By inspecting HTTP response headers, you can quickly see if redirects work correctly, whether HTTPS is enforced, how caching is configured and which security headers are active.

Why HTTP Headers Matter

Every HTTP response includes a status line and a set of headers that tell browsers, crawlers and tools how to handle your page. These headers influence SEO, performance, security and analytics.

Status codes (200, 301, 404, 500): Indicate success, redirects, not found pages or server errors.
Content-Type: Tells the browser whether the response is HTML, JSON, an image, etc.
Cache-Control & Expires: Control how long the response can be cached by browsers and CDNs.
Security headers: Such as Strict-Transport-Security, X-Frame-Options and Content-Security-Policy.
Server & CDN headers: Reveal which server software or CDN is serving the response.

How to Use the HTTP Header Checker

Enter the full URL or domain you want to test in the field above.
Click Check Headers. The tool will send a lightweight HEAD request and follow common redirects.
Review the status code, response time, and header count in the overview cards.
Scroll through the table to see each header name and value.
Use the Copy or Download buttons to export the results for documentation or debugging.

Typical Use Cases

Verify that HTTP to HTTPS redirects are set up correctly.
Check whether SEO-friendly redirects (301 vs 302) are being used.
Inspect security headers before launching a new site or feature.
Debug caching issues by reviewing Cache-Control and related headers.
Confirm which CDN or reverse proxy is serving traffic.

Privacy & Lightweight Requests

The tool uses a HEAD-style request on the server side to fetch only the response headers, which keeps requests fast and avoids downloading full page content or assets. We do not store the URLs you test or the headers returned; they are used only to generate your current result.

Combine with Other Website Management Tools

After checking headers, you can continue your audit with other tools on PowerSEOTools.online – such as meta tag generators, Open Graph preview tools and SEO analyzers – to fine-tune how your website appears in browsers, search results and social feeds.