HTTP Headers Analysis for https://zeroheight.com

Detected Technologies from Headers

See all in URL Inspect 3

AWS CloudFront

Next.js

Vercel

HTTP Security Headers

Status

Strict-Transport-Security

Excellent

max-age=63072000; includeSubDomains; preload

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 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

Vary

Performance

Accept-Encoding

connection: close
vary: Accept-Encoding

Caching Headers

Age

Caching

4655

Cache-Control

Caching

public, max-age=0, must-revalidate

Etag

Caching

"ez0fz6kgjs5x70"

age: 4655
cache-control: public, max-age=0, must-revalidate
etag: "ez0fz6kgjs5x70"

Content Headers

Content-Length

Content

276355

Content-Type

Content

text/html; charset=utf-8

content-length: 276355
content-type: text/html; charset=utf-8

Server Headers

No server headers found

CORS Headers

No CORS headers found

Cookies Headers

Set-Cookie

Cookies

set-cookie: zh_in_eu=1; Path=/; Expires=Sun, 01 Mar 2026 00:36:23 GMT; Max-Age=604800; SameSite=lax

Other Headers

Date

Other

Sun, 22 Feb 2026 00:36:23 GMT

Via

Other

1.1 198cbc57876c11a924d420e6a74e04a8.cloudfront.net (CloudFront)

X-Amz-Cf-Id

Other

YNnThwzSJb0ut-XV6rV-OSDXcszhYA0T422zieiekE31FQXj4ofzyA==

X-Amz-Cf-Pop

Other

DUB56-P4

X-Cache

Other

Miss from cloudfront

X-Matched-Path

Other

/

X-Nextjs-Prerender

Other

1

X-Vercel-Cache

Other

HIT

X-Vercel-Id

Other

dub1::iad1::9jl2w-1771720583782-3e1b6c08e24b

Zh-Product-Name

Other

zeroheight

date: Sun, 22 Feb 2026 00:36:23 GMT
via: 1.1 198cbc57876c11a924d420e6a74e04a8.cloudfront.net (CloudFront)
x-amz-cf-id: YNnThwzSJb0ut-XV6rV-OSDXcszhYA0T422zieiekE31FQXj4ofzyA==
x-amz-cf-pop: DUB56-P4
x-cache: Miss from cloudfront
x-matched-path: /
x-nextjs-prerender: 1
x-vercel-cache: HIT
x-vercel-id: dub1::iad1::9jl2w-1771720583782-3e1b6c08e24b
zh-product-name: zeroheight

Recommendations

Enable compression (gzip/brotli) to improve performance