HTTP Headers Analysis for https://onyx.dev

Detected Technologies from Headers

See all in URL Inspect 5

Cloudflare NEL Monitoring

Cloudflare CDN

Cloudflare Web Analytics

Google Fonts

Next.js

HTTP Security Headers

Status

Strict-Transport-Security

Excellent

max-age=63072000; includeSubDomains; preload

Content-Security-Policy

Good

default-src; script-src; style-src; +7 more Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Excellent

DENY

X-Content-Type-Options

Good

nosniff

Referrer-Policy

Good

no-referrer-when-downgrade

Permissions-Policy

Missing

Not configured

Recommendations

• Strengthen CSP by removing 'unsafe-eval'
• 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

Cache-Control

Caching

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

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

cloudflare

X-Powered-By

Server

Next.js

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

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Cf-Ray

Other

9fe25656a9382058-IAD

Date

Other

Tue, 19 May 2026 10:14:53 GMT

Nel

Other

Report-To Group cf-nel max-age: 1w

success: 0.0%

Report-To

Other

Group cf-nel max-age: 1w

Endpoint 1 https://a.nel.cloudflare.com/report/v4?s=AKy5W9P2LqkigZeg0bvK92n6RQxMu0eR5A2DtA0ZWF6tN2RrqXr8PByEbqB7xWQboLuf5VzO1SjvKnbRE6Ajrk95CLO3lbHjvT6HtipGZyAmk0xbA429nnfr

Server-Timing

Other

cfEdge;dur=215,cfOrigin;dur=0,cfWorker;dur=423

X-Opennext

Other

1

cf-ray: 9fe25656a9382058-IAD
date: Tue, 19 May 2026 10:14:53 GMT
nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
report-to: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=AKy5W9P2LqkigZeg0bvK92n6RQxMu0eR5A2DtA0ZWF6tN2RrqXr8PByEbqB7xWQboLuf5VzO1SjvKnbRE6Ajrk95CLO3lbHjvT6HtipGZyAmk0xbA429nnfr"}]}
server-timing: cfEdge;dur=215,cfOrigin;dur=0,cfWorker;dur=423
x-opennext: 1

Recommendations

Enable compression (gzip/brotli) to improve performance

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