HTTP headers lookup

HTTP headers are a part of the HTTP protocol used by web browsers and servers to communicate with each other. These headers contain information about the request or response being sent, including the content type, language, encoding, cache control, and other important details.

HTTP headers can be inspected using a variety of tools, including web browser developer tools and online header lookup services. To inspect HTTP headers using a web browser, you can typically open the developer tools (usually by pressing F12) and navigate to the Network tab.

From there, you can select a specific request and view the corresponding headers.

Online HTTP header lookup services can also be useful for inspecting headers. These services typically allow you to enter a URL and retrieve the headers for that page. Some popular online header lookup services include, HTTP Viewer, and Header Spy.

Inspecting HTTP headers can be useful for troubleshooting website issues, analyzing website performance, and testing website security.

For example, you can use HTTP headers to check if a website is using HTTPS encryption, to identify caching issues, or to check for security vulnerabilities like Cross-Site Scripting (XSS) or Cross-Site Request Forgery (CSRF) attacks.

In summary, HTTP headers are an important part of the HTTP protocol and can provide valuable information about website requests and responses. Inspecting HTTP headers can be done using web browser developer tools or online header lookup services, and can be useful for troubleshooting, analyzing performance, and testing website security.

Popular tools