HTTP Header Checker

Inspect status and page response information for a public URL.

Analyze Website Responses with Our HTTP Header Checker

When managing a website, troubleshooting technical SEO issues, or developing web applications, understanding how your server communicates with browsers and search engine crawlers is essential. Our http header checker is a fast, reliable, and completely free online utility designed to give you instant insights into your web page's server responses.

Whether you are verifying an SSL certificate implementation, tracking down a troublesome redirect loop, or checking if your caching policies are working correctly, this tool simplifies the entire diagnostic process. No downloads, no registration—just quick and accurate data right in your browser.

Why Use an HTTP Header Checker?

HTTP headers are the core metadata sent between a web server and a client browser. They dictate how content is loaded, cached, and secured. Monitoring these headers helps webmasters, developers, and marketers in several critical ways:

SEO Auditing: Ensure your pages return the correct 200 OK status code instead of accidental 404 Not Found or 500 Internal Server Error codes.
Redirect Troubleshooting: Trace 301 and 302 redirects to guarantee that link equity is flowing properly and users reach the intended destination without infinite loops.
Security Verification: Check for essential security headers like Content Security Policy (CSP), X-Frame-Options, and Strict-Transport-Security (HSTS).
Performance Optimization: Review caching directives such as Cache-Control and Expires to ensure your static assets load efficiently.

How to Use the HTTP Header Checker

Analyzing your website's response headers takes only a few seconds. Follow these simple steps:

Enter the full URL of the web page you wish to inspect into the input box above.
Click the "Check Headers" button to initiate the request.
Review the comprehensive list of response headers returned by the server, including status codes, content types, and server information.

Frequently Asked Questions

Is this http header checker completely free?
Yes, all tools on Potato PDF, including this header analyzer, are 100% free to use with no hidden fees or subscription requirements.

What is a good HTTP status code?
A 200 OK status code is ideal for standard web pages, indicating the server successfully processed the request. Codes starting with 3 indicate redirects, 4 indicate client errors, and 5 indicate server errors.

Do I need to install any software?
No. Our tool runs entirely online through your web browser, making it accessible on desktop and mobile devices alike.

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