HTTP Headers Analysis for https://www.pubnub.com

Open Cached · just now

26 Headers

Detected Technologies from Headers

See all in URL Inspect 4

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=31557600

Content-Security-Policy

Missing

Not configured Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Excellent

DENY

X-Content-Type-Options

Good

nosniff

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 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

RSC, Accept-Encoding

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

Caching Headers

Age

Caching

324985

Cache-Control

Caching

public, s-maxage=604800, max-age=300

Last-Modified

Caching

Fri, 11 Sep 2026 21:48:27 GMT

age: 324985
cache-control: public, s-maxage=604800, max-age=300
last-modified: Fri, 11 Sep 2026 21:48:27 GMT

Content Headers

Content-Length

Content

347301

Content-Type

Content

text/html; charset=utf-8

content-length: 347301
content-type: text/html; charset=utf-8

Server Headers

Server

Server

Netlify

X-Powered-By

Server

Next.js

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

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Cache-Status

Other

"Netlify Durable"; fwd=bypass, "Netlify Edge"; fwd=miss; fwd-status=200

Date

Other

Tue, 15 Sep 2026 14:18:52 GMT

Fastly-State

Other

HIT-CLUSTER

Link

Other

URL

/_next/static/media/3b75a93549024c79-s.p.woff2

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

URL

/_next/static/media/4eb5824f4a628c7e-s.p.woff2

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

URL

/_next/static/media/609eb1ae761915cb-s.p.woff2

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

URL

/_next/static/media/64698228b2165a7c-s.p.woff2

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

Netlify-Vary

Other

query=__nextDataReq|_rsc,header=x-nextjs-data|x-next-debug-logging|next-router-prefetch|next-router-segment-prefetch|next-router-state-tree|next-url|rsc|accept-encoding,cookie=__prerender_bypass|__next_preview_data

Via

Other

1.1 varnish, 1.1 varnish

X-Cache

Other

HIT, HIT

X-Cache-Hits

Other

14, 0

X-Contentdebug

Other

html

X-Nf-Request-Id

Other

01M2910VQMWC0527EXYAQD2YZS

X-Permitted-Cross-Domain-Policies

Other

none

X-Served-By

Other

cache-chi-klot8100159-CHI, cache-lga21932-LGA

X-Timer

Other

S1789481932.137908,VS0,VE2

cache-status: "Netlify Durable"; fwd=bypass, "Netlify Edge"; fwd=miss; fwd-status=200
date: Tue, 15 Sep 2026 14:18:52 GMT
fastly-state: HIT-CLUSTER
link: </_next/static/media/3b75a93549024c79-s.p.woff2>; rel=preload; as="font"; crossorigin=""; type="font/woff2", </_next/static/media/4eb5824f4a628c7e-s.p.woff2>; rel=preload; as="font"; crossorigin=""; type="font/woff2", </_next/static/media/609eb1ae761915cb-s.p.woff2>; rel=preload; as="font"; crossorigin=""; type="font/woff2", </_next/static/media/64698228b2165a7c-s.p.woff2>; rel=preload; as="font"; crossorigin=""; type="font/woff2", </_next/static/media/7d8c7b021bdcbfbb-s.p.woff2>; rel=preload; as="font"; crossorigin=""; type="font/woff2"
netlify-vary: query=__nextDataReq|_rsc,header=x-nextjs-data|x-next-debug-logging|next-router-prefetch|next-router-segment-prefetch|next-router-state-tree|next-url|rsc|accept-encoding,cookie=__prerender_bypass|__next_preview_data
via: 1.1 varnish, 1.1 varnish
x-cache: HIT, HIT
x-cache-hits: 14, 0
x-contentdebug: html
x-nf-request-id: 01M2910VQMWC0527EXYAQD2YZS
x-permitted-cross-domain-policies: none
x-served-by: cache-chi-klot8100159-CHI, cache-lga21932-LGA
x-timer: S1789481932.137908,VS0,VE2

Recommendations

Enable compression (gzip/brotli) to improve performance

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