HTTP Headers Analysis for https://promptmonitor.io

Detected Technologies from Headers

See all in URL Inspect 2

Next.js

Vercel

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=63072000

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

Connection

Performance

close

Transfer-Encoding

Performance

chunked

Vary

Performance

rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch

connection: close
transfer-encoding: chunked
vary: rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch

Caching Headers

Age

Caching

0

Cache-Control

Caching

private, no-cache, no-store, max-age=0, must-revalidate

age: 0
cache-control: private, no-cache, no-store, max-age=0, must-revalidate

Content Headers

Content-Type

Content

text/html; charset=utf-8

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

Server Headers

Server

Vercel

X-Powered-By

Server

Next.js

server: Vercel
x-powered-by: Next.js

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Date

Other

Tue, 31 Mar 2026 10:47:40 GMT

Link

Other

URL /_next/static/media/83afe278b6a6bb3c-s.p.3a6ba036.woff2

rel=preload as=font crossorigin type=font/woff2

URL /_next/static/media/caa3a2e1cccd8315-s.p.853070df.woff2

rel=preload as=font crossorigin type=font/woff2

URL

/_next/static/chunks/fd8a79557694adb3.css?dpl=dpl_Bet6jVh4ffwNkt5a18BA4ns9r4sW

rel=preload as=style

URL

/_next/static/chunks/e3894559666db4d0.css?dpl=dpl_Bet6jVh4ffwNkt5a18BA4ns9r4sW

rel=preload as=style

X-Matched-Path

Other

/

X-Vercel-Cache

Other

MISS

X-Vercel-Id

Other

iad1::iad1::th4pv-1774954060596-ba8a80f8f043

date: Tue, 31 Mar 2026 10:47:40 GMT
link: </_next/static/media/83afe278b6a6bb3c-s.p.3a6ba036.woff2>; rel=preload; as="font"; crossorigin=""; type="font/woff2", </_next/static/media/caa3a2e1cccd8315-s.p.853070df.woff2>; rel=preload; as="font"; crossorigin=""; type="font/woff2", </_next/static/chunks/fd8a79557694adb3.css?dpl=dpl_Bet6jVh4ffwNkt5a18BA4ns9r4sW>; rel=preload; as="style", </_next/static/chunks/e3894559666db4d0.css?dpl=dpl_Bet6jVh4ffwNkt5a18BA4ns9r4sW>; rel=preload; as="style", </_next/static/chunks/47f765272607779c.css?dpl=dpl_Bet6jVh4ffwNkt5a18BA4ns9r4sW>; rel=preload; as="style"
x-matched-path: /
x-vercel-cache: MISS
x-vercel-id: iad1::iad1::th4pv-1774954060596-ba8a80f8f043

Recommendations

Enable compression (gzip/brotli) to improve performance

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