Security Headers Checker

Audit website HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy) with a letter grade score.

Security Header Audit Score

How to Use the Security Headers Checker

Enter the target hostname, domain, IP, or input parameters into the Security Headers Checker interface.
Adjust any specific configuration options, flags, or test protocols as required.
Click the action button to execute the query or generate your output in real time.
Inspect the formatted results, copy the data, or export/download the generated configuration.

Technical Specifications for Security Headers Checker

Network Protocol: IPv4, IPv6, DNS over HTTPS (DoH), HTTP/1.1, HTTP/2, RFC Standards
Execution Environment: High-speed browser processing with zero tracking or unnecessary server storage
Export & Formats: Raw text, structured JSON, downloadable configuration files, one-click clipboard copy
Compatibility: Fully responsive on desktop workstations, tablets, and mobile devices

common.faq.title

What is the primary purpose of the Security Headers Checker?

The Security Headers Checker allows webmasters, system administrators, and developers to analyze, validate, or generate networking parameters accurately without installing third-party command-line utilities.

Is my network query or input data kept private?

Yes. Operations are executed either completely in your browser or through standard, non-logged DNS and public network lookups. We do not store or log your queries.

Can I use the output of Security Headers Checker in production environments?

Absolutely. All outputs follow official IETF RFC standards and industry best practices for server administration and webmaster workflows.