HTTP Headers Analysis for https://notebooks.githubusercontent.com

Detected Technologies from Headers

See all in URL Inspect 1

GitHub

HTTP Security Headers

Status

Strict-Transport-Security

Missing

Not configured

Content-Security-Policy

Missing

Not configured Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

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
• Add Content-Security-Policy header to prevent XSS attacks
• 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

Connection

Performance

close

connection: close

Caching Headers

Etag

Caching

"699e3bf1-3ec"

etag: "699e3bf1-3ec"

Content Headers

Content-Length

Content

1004

Content-Type

Content

text/html

content-length: 1004
content-type: text/html

Server Headers

Server

github.com

server: github.com

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Date

Other

Wed, 25 Feb 2026 18:00:30 GMT

X-Github-Backend

Other

Kubernetes

X-Github-Request-Id

Other

D13A:18C028:E265C7:F92E0D:699F38BE

date: Wed, 25 Feb 2026 18:00:30 GMT
x-github-backend: Kubernetes
x-github-request-id: D13A:18C028:E265C7:F92E0D:699F38BE

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching