HTTP Headers Analysis for https://certificates.dev

Detected Technologies from Headers

See all in URL Inspect 2

Netlify

Nuxt

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=31536000

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

connection: close
transfer-encoding: chunked

Caching Headers

Age

Caching

0

Cache-Control

Caching

s-maxage=300,stale-while-revalidate

Etag

Caching

W/"SenLr0pEMl"

Last-Modified

Caching

Mon, 04 May 2026 14:05:39 GMT

age: 0
cache-control: s-maxage=300,stale-while-revalidate
etag: W/"SenLr0pEMl"
last-modified: Mon, 04 May 2026 14:05:39 GMT

Content Headers

Content-Type

Content

text/html;charset=utf-8

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

Server Headers

Server

Netlify

X-Powered-By

Server

Nuxt

server: Netlify
x-powered-by: Nuxt

CORS Headers

No CORS headers found

Cookies Headers

Set-Cookie

Cookies

set-cookie: queue=%5B%5D; Path=/
darkMode=true; Max-Age=31536000; Path=/
banner-javascript=true; Max-Age=604800; Path=/
banner-angular=true; Max-Age=604800; Path=/

Other Headers

Cache-Status

Other

"Netlify Durable"; fwd=bypass, "Netlify Edge"; fwd=miss

Date

Other

Mon, 04 May 2026 14:06:14 GMT

Netlify-Vary

Other

cookie=jwt,query

X-Nf-Request-Id

Other

01KQSMZ7KBRBFQ8W25GBRS0KXE

X-Robots-Tag

Other

all

cache-status: "Netlify Durable"; fwd=bypass, "Netlify Edge"; fwd=miss
date: Mon, 04 May 2026 14:06:14 GMT
netlify-vary: cookie=jwt,query
x-nf-request-id: 01KQSMZ7KBRBFQ8W25GBRS0KXE
x-robots-tag: all

Recommendations

Enable compression (gzip/brotli) to improve performance

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