Security Headers Scanner
SEO ToolsScan your website's HTTP security headers and get an A-F grade with actionable recommendations.
How to use Security Headers Scanner
- 1Enter your input in the text area above
- 2Click the action button to process your data
- 3View the result and copy it to your clipboard
Common Use Cases
Quick Processing
Process your data quickly and efficiently.
Secure & Private
All processing happens in your browser.
Free to Use
This tool is completely free with no signup.
Mobile Friendly
Works on any device with a browser.
Frequently Asked Questions
What are HTTP security headers?
HTTP security headers are response headers that instruct browsers to enable security features. Key headers include CSP (Content Security Policy), HSTS (HTTPS enforcement), X-Frame-Options (clickjacking protection), and more.
Why is Content-Security-Policy important?
CSP is the most powerful security header. It controls which resources (scripts, styles, images) can load on your page, effectively preventing XSS attacks, data injection, and unauthorized script execution.
How do I add security headers to my website?
Add them via your web server configuration (Nginx: add_header directive, Apache: Header directive) or CDN settings (Cloudflare: Transform Rules). For static sites on Cloudflare Pages, use _headers file.
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