HTTP Server Header Checker
View the request and response headers and HTTP status codes of a connection. Enter a URL below to inspect its HTTP headers.
What are HTTP headers?
HTTP headers are name/value pairs sent in the request and response messages of the Hypertext Transfer Protocol (HTTP). The header name and value are separated by a colon. Headers are an integral part of every HTTP request and response.
Common HTTP status codes
- 200 OK — the request has succeeded
- 301 Moved Permanently — the URL has been moved permanently
- 404 Not Found — the server cannot find the requested resource
- 500 Internal Server Error — the server encountered an unexpected condition