DNS Gurus
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12 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Weak
base-uri
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Add Strict-Transport-Security header with max-age of at least 1 year
  • • Significantly strengthen CSP directives
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • • Add X-Content-Type-Options: nosniff
  • • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
  • • Consider adding Permissions-Policy to control browser features

Performance Headers

3 headers
Connection
Performance
close
Transfer-Encoding
Performance
chunked
Vary
Performance
Accept-Encoding

Caching Headers

3 headers
Cache-Control
Caching
private, must-revalidate
Expires
Caching
-1
Pragma
Caching
no-cache

Content Headers

1 headers
Content-Type
Content
text/html; charset=UTF-8

Server Headers

2 headers
Server
Server
nginx/1.27.5
X-Powered-By
Server
PHP/7.4.33

CORS Headers

0 headers
No CORS headers found

Cookies Headers

1 headers
Set-Cookie
Cookies
bookstack_session=eyJpdiI6IjRSZGdhNUJpeFZESjBPTmJCNGY1WUE9PSIsInZhbHVlIjoiU01QMkc0SFU0ZUdhcU41RlBTRktiQVExN2swcG9OWitvUEtBNDB6ejNQVVh5TVNGSDlyaVcycHlLQVZtUnVJQTRZdVI4WngzTUhhUU40ZFlaRnV3Qk44ekQ5YU9SRzAwMXFqRkw1UE9ycWNVeS9scU11VXFlYUhXL25jVit5Q20iLCJtYWMiOiJiNjE5MjQ5ODRjNGM5NTJlYjAyMzBmNmIxMzEyYzczZTlmMmZkMWNjNDlkMjEyMGY2YzRlOTI3NjY4MGYwYThiIiwidGFnIjoiIn0%3D; expires=Sun, 01-Feb-2026 14:21:53 GMT; Max-Age=7200; path=/; secure; httponly; samesite=lax

Other Headers

1 headers
Date
Other
Sun, 01 Feb 2026 12:21:53 GMT

Recommendations

Enable compression (gzip/brotli) to improve performance

Consider removing X-Powered-By header to hide server technology