HTTP Header Checker

Developer Tools | Updated April 22, 2026

Check HTTP response headers instantly. Enter a URL below and click "Check Headers" to view status codes and header details.

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Check Headers Check Headers Clear Clear

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The HTTP Header Checker allows you to inspect the response headers of any website or API endpoint. It helps you quickly view status codes, server details, and important header information.

Simply enter a URL and click "Check Headers" to retrieve the response headers. This is useful for debugging requests, verifying configurations, and understanding how a server responds.

Developers often use this tool to analyze caching, security headers, redirects, and API responses. It provides a fast and convenient way to troubleshoot issues without leaving your browser.

All requests are sent directly from your browser. No data is stored, ensuring a safe and private experience.

HTTP Header Checker FAQs

Common questions about inspecting HTTP headers, understanding responses, and debugging requests

1. What are HTTP headers?

HTTP headers are key-value pairs sent between a client and server that provide important information about the request or response, such as content type, caching rules, and server details.
2. How do I use this tool?

Enter a valid URL and click "Check Headers." The tool will display the response status and headers returned by the server.
3. Why can’t I see all headers?

Some headers may be restricted by the browser due to security policies like CORS, so not all server headers are accessible.
4. What is a status code?

A status code indicates the result of a request, such as 200 (success), 404 (not found), or 500 (server error).

HTTP Header Checker

HTTP Header Checker FAQs

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