HTTP Headers Analysis for https://docs.overleaf.com

Detected Technologies from Headers

See all in URL Inspect 3

Cloudflare CDN

Next.js

Vercel

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=31536000

Content-Security-Policy

Basic

default-src; script-src; style-src; +8 more Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Missing

Not configured

X-Content-Type-Options

Good

nosniff

Referrer-Policy

Good

no-referrer-when-downgrade

Permissions-Policy

Missing

Not configured

Recommendations

• Increase HSTS max-age to at least 1 year and add includeSubDomains
• Improve CSP by adding more specific directives and removing 'unsafe-inline'
• Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
• 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, accept-encoding

connection: close
transfer-encoding: chunked
vary: RSC, Next-Router-State-Tree, Next-Router-Prefetch, Next-Router-Segment-Prefetch, accept-encoding

Caching Headers

Age

Caching

52384

Cache-Control

Caching

public, max-age=0, must-revalidate

age: 52384
cache-control: public, 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

server: cloudflare

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Alt-Svc

Other

h3=":443"; ma=86400

Cf-Cache-Status

Other

DYNAMIC

Cf-Ray

Other

9d23ee922e83e600-IAD

Date

Other

Mon, 23 Feb 2026 04:20:39 GMT

X-Gitbook-Route-Site

Other

docs.overleaf.com/

X-Gitbook-Route-Type

Other

static

X-Gitbook-Target

Other

2v

X-Matched-Path

Other

/sites/static/[mode]/[siteURL]/[siteData]/[pagePath]

X-Nextjs-Prerender

Other

1

X-Nextjs-Stale-Time

Other

300

X-Vercel-Cache

Other

HIT

X-Vercel-Id

Other

iad1::iad1::kxvf9-1771820439517-6eb5d8d54b71

alt-svc: h3=":443"; ma=86400
cf-cache-status: DYNAMIC
cf-ray: 9d23ee922e83e600-IAD
date: Mon, 23 Feb 2026 04:20:39 GMT
x-gitbook-route-site: docs.overleaf.com/
x-gitbook-route-type: static
x-gitbook-target: 2v
x-matched-path: /sites/static/[mode]/[siteURL]/[siteData]/[pagePath]
x-nextjs-prerender: 1
x-nextjs-stale-time: 300
x-vercel-cache: HIT
x-vercel-id: iad1::iad1::kxvf9-1771820439517-6eb5d8d54b71

Recommendations

Enable compression (gzip/brotli) to improve performance