Open
Cached
·
just now
32
Headers
HTTP Security Headers
Status
Strict-Transport-Security
Excellent
max-age=31536000; includeSubDomains; preload
Content-Security-Policy
Basic
default-src; connect-src; manifest-src; +11 more
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font-src app.gitbook.com * js.intercomcdn.com fonts.intercomcdn.com data: cdnjs.cloudflare.com cdn.jsdelivr.net unpkg.com assets.getripe.com; child-src 'self' blob: www.intercom-reporting.com intercom-sheets.com www.youtube.com player.vimeo.com fast.wistia.net www.googletagmanager.com app.hubspot.com forms.hsforms.com js.hsadspixel.net js.hscollectedforms.net js.usemessages.com; worker-src 'self' blob:; frame-src www.intercom-reporting.com www.googletagmanager.com * *.hubspot.com forms.hsforms.com js.hsadspixel.net js.hscollectedforms.net js.usemessages.com *.stripe.com *.stripe.network renderer.gist.build code.gist.build; form-action api-iam.intercom.io intercom.help forms.hsforms.com forms.hubspot.com; media-src *.intercomcdn.com *.mux.com blob:; frame-ancestors app.gitbook.com; report-uri https://o1000929.ingest.sentry.io/api/5960429/security/?sentry_key=a9072c7b7a264a6e9c617a4fa5fa8ed9&sentry_environment=gitbook-x-prod&sentry_release=10.9.1505;
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer-when-downgrade
Permissions-Policy
Missing
Not configured
Recommendations
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
- • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
- • Consider adding Permissions-Policy to control browser features
Performance Headers
3 headers
Accept-Ranges
Performance
bytes
Connection
Performance
close
Vary
Performance
Accept-Encoding
Caching Headers
5 headers
Age
Caching
6778
Cache-Control
Caching
public, max-age=0, s-maxage=604800, must-revalidate
Etag
Caching
"f1e5fa6f6429c044ee4bc275fb392268"
Expires
Caching
Sun, 04 Jan 2026 12:00:03 GMT
Last-Modified
Caching
Fri, 26 Dec 2025 21:53:51 GMT
Content Headers
2 headers
Content-Length
Content
9455
Content-Type
Content
text/html
Server Headers
2 headers
Server
Server
cloudflare
X-Powered-By
Server
GitBook
CORS Headers
1 headers
Access-Control-Allow-Origin
Cors
*
Cookies Headers
0 headers
No cookies headers found
Other Headers
15 headers
Alt-Svc
Other
h3=":443"; ma=86400
Cf-Cache-Status
Other
HIT
Cf-Ray
Other
9b52257dde259e01-IAD
Date
Other
Sun, 28 Dec 2025 15:38:44 GMT
Via
Other
magic cache
X-Cache
Other
HIT
X-Goog-Generation
Other
1766786031061402
X-Goog-Hash
Other
md5=8eX6b2QpwETuS8J1+zkiaA==
X-Goog-Metageneration
Other
1
X-Goog-Storage-Class
Other
STANDARD
X-Goog-Stored-Content-Encoding
Other
identity
X-Goog-Stored-Content-Length
Other
9455
X-Guploader-Uploadid
Other
AHVrFxMl_P4q7UvzRr4DFaGvTxYzmzjvmA9YX2yQdaDett-MtKQBlKRTtPbMHkMBwOfBy_kYWvIUD6Y
X-Magic-Hash
Other
af4c074cf559077e7232e162253fcd550feb8ffc0e39ae0e035ce98e2f84209e
X-Release
Other
gitbook-x-prod-10.9.1505-0b43ebd-2052998
Recommendations
Enable compression (gzip/brotli) to improve performance
Consider removing X-Powered-By header to hide server technology
Analysis completed in 193ms