Security Free · no signup
HTTP Security Headers Grader
Grade HTTP security headers (CSP, HSTS, X-Frame-Options, etc.) with A-F scoring.
Updated Enis GetmezFounder & Lead Engineer
Grade HTTP security headers (CSP, HSTS, X-Frame-Options, etc.) with A-F scoring.
Discover 160+ free tools for web scraping, SEO analysis, OSINT, and more. 30 free uses every day — no signup required.
HTTP Security Headers Grader checks 8 critical security headers and grades your site A-F based on their presence and configuration.
Content-Security-Policy and Strict-Transport-Security are the most impactful for modern web security.
You might also like
Check DMARC, SPF, and DKIM DNS records for any domain to assess email authentication and prevent spoofing.
Find HTTP resources loaded on HTTPS pages. Detect active and passive mixed content issues.
Analyze Content Security Policy headers. Check for unsafe-inline, unsafe-eval, and wildcards.
Analyze cookies set by a website. Check Secure, HttpOnly, SameSite flags and compliance issues.
Analyze HTTP response headers, security headers, cookies, and redirects.
Send HTTP requests and inspect full response details including headers, body, status, and timing.
Looking for something specific? Browse all 158 Krawly tools