HTTP Header Checker
See the status code and response headers a web address sends, including every redirect on the way.
Enter a web address to see its status code and response headers.
How to check HTTP headers
- Type or paste a web address.
- Click Check headers.
- Read the status code and the list of headers the server sent back. If the address redirects, each stop is listed.
What response headers tell you
Before a server sends a page, it sends headers: a status code saying whether the request worked, and settings such as how long the page may be cached, whether it is compressed, and what security rules apply. For SEO, the ones to watch are the status code (200 means fine, 404 missing, 301 moved), X-Robots-Tag (which can hide a page from search without any tag in the HTML), and caching and compression, which affect speed.
Frequently asked questions
What do the status codes mean?
200 means the page loaded. 301 and 308 are permanent redirects; 302 and 307 are temporary. 404 means not found, 410 gone for good, and codes starting with 5 are server errors.
Why does the tool say access is refused when the page opens for me?
Some sites block automated requests. The page may work in a browser and still answer 403 to a checker.
Which addresses can be checked?
Any public http:// or https:// address on the standard ports. Private network addresses cannot be checked.
Why is there a limit on checks?
Each check is a real request made by our server, so there is a limit of 30 checks every five minutes to prevent abuse.
Is what I look up stored?
No. Our server makes the lookup once and sends the result back to you. What you enter and the result are not saved.