HTTP headers checker
Fetch response headers for any public URL. See a security summary for HSTS, CSP, and other key headers - plus all raw headers grouped by category.
How it works
Three steps to your result.
Enter a URL
Paste a full URL or bare domain. We normalize it to https if no protocol is given.
We fetch the headers
Our server sends a HEAD request (or GET if HEAD is rejected) and reads all response headers.
Review the results
See all headers grouped by category, and a security summary showing which key headers are present or missing.
Frequently asked questions
Quick answers about this tool.
Why HEAD and not GET?
What does the security score mean?
Are results cached?
Can I check a staging URL?
Good to know
Context and tips to get more out of this tool.
What a header checker shows
Every web response starts with a status code and a set of headers the page itself never shows. This checker requests the URL from our servers, follows up to five redirects, and shows the final URL, the status code, and every response header: caching, content type, server, cookies, and security headers.
The five security headers we score
Strict-Transport-Security forces HTTPS. Content-Security-Policy limits where scripts and other resources can load from. X-Frame-Options stops other sites from framing your pages. X-Content-Type-Options stops browsers from guessing file types. Referrer-Policy controls how much of your URL is passed to other sites. The score counts how many of the five are present. It does not judge whether each value is strict enough.
Use it for SEO checks too
Headers explain a lot of indexing puzzles. An X-Robots-Tag: noindex header hides a page from Google even when the HTML looks fine. A redirect chain shows up as a different final URL. A Cache-Control header that is too long explains why an old version keeps appearing.
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See the real conversations behind this check
The moment you know your site, name, or profile is healthy, the next step is demand: find the people already discussing the problem you solve, ranked by buying intent.
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