HTTP Header Analyzer and Checker

About HTTP Headers

HTTP headers play a crucial role in the communication between clients and servers. By using the HTTP Header Checker Tool, you can easily retrieve the HTTP header information for a specified URL and identify areas for improving site performance and security. Analyze headers such as Content-Type and Cache-Control in detail to assist in web development and security measures.

Terms Related to HTTP Headers

HTTP Headers:

Metadata included in HTTP requests and responses that provide information about the operation of the server and client.

Content-Type:

A header that specifies the media type of the HTTP response body, such as "text/html" or "application/json".

Cache-Control:

A header used to control caching behavior, specifying how browsers and proxy servers should cache content.

Expires:

A header that specifies the date and time after which the response is considered stale, instructing the browser to retain the cache until that date.

Strict-Transport-Security (HSTS):

A security header that instructs browsers to use HTTPS only for a specified period.

Content-Security-Policy (CSP):

A security header that helps prevent cross-site scripting (XSS) attacks by specifying the sources of content that browsers are allowed to load.

Server:

A header that provides information about the server software that generated the HTTP response.

Set-Cookie:

A header used by servers to send cookies to the client.

Transfer-Encoding:

A header that specifies the form of encoding used to safely transfer the entity to the user, such as "chunked".

X-Frame-Options:

A security header that indicates whether a browser should be allowed to render a page in a frame, iframe, or object to prevent clickjacking attacks.