HTTP Headers Analysis for https://certum.pl

Detected Technologies from Headers

See all in URL Inspect 1

Apache

HTTP Security Headers

Status

Strict-Transport-Security

Excellent

max-age=63072000; includeSubDomains, max-age=31536000; includeSubDomains; preload

Content-Security-Policy

Missing

Not configured Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Good

SAMEORIGIN

X-Content-Type-Options

Good

nosniff

Referrer-Policy

Missing

Not configured

Permissions-Policy

Missing

Not configured

Recommendations

• 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

Connection

Performance

close

Transfer-Encoding

Performance

chunked

Vary

Performance

Accept-Encoding

connection: close
transfer-encoding: chunked
vary: Accept-Encoding

Caching Headers

No caching headers found

Content Headers

Content-Type

Content

text/html; charset=UTF-8

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

Server Headers

Server

Apache

server: Apache

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Date

Other

Wed, 18 Feb 2026 09:15:08 GMT

Link

Other

URL https://www.certum.pl/pl/wp-json/

rel=https://api.w.org/

URL https://www.certum.pl/pl/wp-json/wp/v2/pages/6

rel=alternate title=JSON type=application/json

URL https://www.certum.pl/pl/

rel=shortlink

X-Permitted-Cross-Domain-Policies

Other

none

date: Wed, 18 Feb 2026 09:15:08 GMT
link: <https://www.certum.pl/pl/wp-json/>; rel="https://api.w.org/", <https://www.certum.pl/pl/wp-json/wp/v2/pages/6>; rel="alternate"; title="JSON"; type="application/json", <https://www.certum.pl/pl/>; rel=shortlink
x-permitted-cross-domain-policies: none

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching