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

Detected Technologies from Headers

See all in URL Inspect 1

Cloudflare CDN

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=15552000; includeSubDomains; preload

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

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 X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
• 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

accept-encoding

connection: close
transfer-encoding: chunked
vary: accept-encoding

Caching Headers

Cache-Control

Caching

max-age=14400

Last-Modified

Caching

Mon, 01 Jul 2024 11:38:08 GMT

cache-control: max-age=14400
last-modified: Mon, 01 Jul 2024 11:38:08 GMT

Content Headers

Content-Type

Content

text/html

content-type: text/html

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

REVALIDATED

Cf-Ray

Other

a086011fb8a4e6e8-IAD

Date

Other

Mon, 08 Jun 2026 06:57:47 GMT

Server-Timing

Other

cfCacheStatus;desc="REVALIDATED", cfEdge;dur=13,cfOrigin;dur=212

Speculation-Rules

Other

"/cdn-cgi/speculation"

alt-svc: h3=":443"; ma=86400
cf-cache-status: REVALIDATED
cf-ray: a086011fb8a4e6e8-IAD
date: Mon, 08 Jun 2026 06:57:47 GMT
server-timing: cfCacheStatus;desc="REVALIDATED", cfEdge;dur=13,cfOrigin;dur=212
speculation-rules: "/cdn-cgi/speculation"

Recommendations

Enable compression (gzip/brotli) to improve performance