What is Secure Headers Checker?

A browser-based tool that audits security headers of a website to ensure it's protected against common attacks.

How do I use the Secure Headers Checker?

Enter your site’s URL and click 'Check'. The tool will analyze your headers and provide feedback on how to improve them.

Is the output always accurate?

While highly reliable, it may not catch all issues. Always review the documentation for each header type for comprehensive guidance.

How does Secure Headers Checker compare with similar tools?

Unlike some online services, this tool runs entirely in your browser, ensuring no data is sent or stored elsewhere.

Does using Secure Headers Checker affect my privacy?

No personal information is collected. The analysis happens locally on your device, respecting your privacy fully.

Secure Headers Checker

Check which security headers your site should have and generate them

Result

Security Grade

Headers Present0 / 8 headers present

Coverage0%

Missing Headers

Strict-Transport-Security [Critical] - Forces HTTPS connections, prevents downgrade attacks
X-Frame-Options [High] - Prevents clickjacking by blocking iframing
Content-Security-Policy [Critical] - Prevents XSS, injection, and data theft attacks
X-Content-Type-Options [High] - Prevents MIME-type sniffing attacks
Referrer-Policy [Medium] - Controls referrer information leakage
Permissions-Policy [Medium] - Restricts browser feature access
X-XSS-Protection [Low] - Legacy XSS filter (CSP is preferred)
CORS Headers [Varies] - Controls cross-origin resource sharing

Recommended Values

Strict-Transport-Security: max-age=63072000; includeSubDomains; preload
X-Frame-Options: DENY
Content-Security-Policy: default-src 'self'; script-src 'self'
X-Content-Type-Options: nosniff
Referrer-Policy: strict-origin-when-cross-origin
Permissions-Policy: camera=(), microphone=(), geolocation=()
X-XSS-Protection: 0 (use CSP instead)
CORS Headers: Depends on API needs

Related Tools

Content Security Policy Generator

Generate CSP headers

CORS Header Generator

Generate CORS headers

About This Tool

The Secure Headers Checker tool helps web developers and security professionals ensure their websites have the best possible security headers set. It checks for common security issues and suggests improvements to protect against attacks.

Users input their website URL, and the tool analyzes HTTP response headers like Content Security Policy (CSP), X-Frame-Options, Strict Transport Security (HSTS), and more. The output provides a detailed report with recommendations.

Ideal for anyone managing web applications or websites, this browser-based tool operates locally without sending any data to external servers, ensuring your privacy remains intact.