See all HTTP headers your browser sends with every request — and check response headers from any website.
These 7 headers are sent with every page you visit
Understanding this tool helps you get the most from it. This page provides a comprehensive explanation of the technology, common use cases, and how to interpret the results.
Each result is explained in plain English so you can take action without needing technical expertise. The tool checks against up-to-date databases and standards.
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