HTTP Header Checker

It sends a request to the URL and shows the final HTTP status code, the chain of redirects it followed to get there, and all the response headers the server returned — things like content-type, cache-control, server, strict-transport-security and your security headers. It is like running curl -I but in your browser.

The request is made from Uptimeify's EU servers, and the URL you enter is used only to perform the check and is not stored. For safety the fetcher only allows http and https, refuses to connect to private or internal addresses, and re-checks every redirect — so it can't be abused to probe internal systems. As an EU-built, EU-hosted provider, we keep this off US infrastructure and clear of US Cloud Act exposure.

Headers and redirects are where caching, HTTPS and security policy quietly go wrong. Check them here, then let Uptimeify watch the URL around the clock from multiple EU locations and alert you within seconds if the status, redirect or response changes.