DNS Gurus
Cached · just now
11 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Basic
frame-ancestors; frame-src; script-src; +2 more
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
  • • Improve CSP by adding more specific directives and removing 'unsafe-inline'
  • • 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

2 headers
Cache-Control
Caching
no-cache, no-store, private
Expires
Caching
Sun, 12 Jul 2015 19:01:00 GMT

Content Headers

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

Server Headers

2 headers
Server
Server
nginx
X-Powered-By
Server
PHP/8.4.16

CORS Headers

0 headers
No CORS headers found

Cookies Headers

1 headers
Set-Cookie
Cookies
bookstack_session=eyJpdiI6ImN4UndrcmV2S1lYemxuQXJKczlva1E9PSIsInZhbHVlIjoiamFVSm4wKzZJaDVSQUR5OWgxaTEwMkZWano4SmVWWjljVFFJSzh4akxaTzF6K2w2bFZSZ0ZwRGZPcDVFZDRwV1lpZTJsQkVzVk5JNlRZK3FBM0hseG5wTlJhWkltNFozYU1lMDdSb0k0czJHRWlhRzAwN24wdjZSYUQvdkZmLzkiLCJtYWMiOiIwNzhjZjBiMDRiYzY0YmU3NDFhODJiN2VkNTBhNzkwZjNmZGQwZGMzNWIyNDdlZDlhZDY5NGE3MWFhOWY4Njg0IiwidGFnIjoiIn0%3D; expires=Mon, 19 Jan 2026 04:32:47 GMT; Max-Age=7200; path=/; secure; httponly; samesite=lax

Other Headers

1 headers
Date
Other
Mon, 19 Jan 2026 02:32:47 GMT

Recommendations

Enable compression (gzip/brotli) to improve performance

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