HTTP Headers Analysis for https://releases.mozilla.com

Detected Technologies from Headers

See all in URL Inspect 2

Nginx

Varnish

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=31536000

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

• Increase HSTS max-age to at least 1 year and add includeSubDomains
• 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

Accept-Ranges

Performance

bytes

Connection

Performance

close

Vary

Performance

Accept, Accept-Encoding

accept-ranges: bytes
connection: close
vary: Accept, Accept-Encoding

Caching Headers

Age

Caching

541

Cache-Control

Caching

max-age=600

Etag

Caching

d9aac7c8b65d52919960ad34187cba98230981db69aee89a27e67cdad6917b65

Expires

Caching

Tue, 27 Oct 2026 20:27:30 GMT

age: 541
cache-control: max-age=600
etag: d9aac7c8b65d52919960ad34187cba98230981db69aee89a27e67cdad6917b65
expires: Tue, 27 Oct 2026 20:27:30 GMT

Content Headers

Content-Length

Content

1600

Content-Type

Content

text/html; charset=utf-8

content-length: 1600
content-type: text/html; charset=utf-8

Server Headers

Server

nginx

server: nginx

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Date

Other

Tue, 27 Oct 2026 22:10:44 GMT

Tmp-Path

Other

Via

Other

1.1 google, 1.1 varnish, 1.1 varnish, 1.1 varnish

X-Cache

Other

MISS, HIT, HIT

X-Cache-Hits

Other

0, 10, 0

X-Served-By

Other

cache-bfi-kbfi7400048-BFI, cache-bfi-kbfi7400048-BFI, cache-bfi-kbfi7400114-BFI, cache-nyc-kteb1890023-NYC

X-Timer

Other

S1793139044.078891,VS0,VE66

date: Tue, 27 Oct 2026 22:10:44 GMT
tmp-path: 
via: 1.1 google, 1.1 varnish, 1.1 varnish, 1.1 varnish
x-cache: MISS, HIT, HIT
x-cache-hits: 0, 10, 0
x-served-by: cache-bfi-kbfi7400048-BFI, cache-bfi-kbfi7400048-BFI, cache-bfi-kbfi7400114-BFI, cache-nyc-kteb1890023-NYC
x-timer: S1793139044.078891,VS0,VE66

Recommendations

Enable compression (gzip/brotli) to improve performance