BUSINESS TOOLS
HTTP Header Checker
Enter a public URL to inspect response headers for SEO, caching, and security diagnostics.
Use with seo and marketing tools
Enter a public HTTP or HTTPS URL to inspect response headers.
- Status
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- Final URL
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- Cache
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Security header summary
HTTP response headers
This tool fetches public URLs through a lightweight server endpoint so response headers can be read despite browser CORS limits. Private and localhost addresses are blocked.
How it works
HTTP Header Checker uses the values you enter to produce a clear result directly in your browser. Inputs are designed to be easy to review before you copy, print, or use the result.
Example
Open the tool, enter a realistic sample value, review the output, and adjust the fields until the result matches your workflow.
Frequently Asked Questions
Why does this tool use a server request?
Browsers usually cannot read arbitrary cross-origin response headers, so the site fetches public URLs through a controlled endpoint.
Can it check local or private URLs?
No. Localhost and private network addresses are blocked for safety.
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