HTTP Headers Analysis for https://posteo.de

Detected Technologies from Headers

See all in URL Inspect 1

Apache

HTTP Security Headers

Status

Strict-Transport-Security

Excellent

max-age=31536000; includeSubDomains; preload

Content-Security-Policy

Basic

connect-src; child-src; font-src; +12 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

Permissions-Policy

Present

accelerometer=(), ambient-light-sensor=(), autoplay=(); +22 more

Recommendations

• Improve CSP by adding more specific directives and removing 'unsafe-inline'
• Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking

Performance Headers

Accept-Ranges

Performance

bytes

Connection

Performance

close

Vary

Performance

Accept-Encoding

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

Caching Headers

Cache-Control

Caching

max-age=0, must-revalidate

Etag

Caching

"100c4-65021857508ac"

Last-Modified

Caching

Thu, 23 Apr 2026 14:32:43 GMT

cache-control: max-age=0, must-revalidate
etag: "100c4-65021857508ac"
last-modified: Thu, 23 Apr 2026 14:32:43 GMT

Content Headers

Content-Length

Content

65732

Content-Type

Content

text/html

content-length: 65732
content-type: text/html

Server Headers

Server

Apache

server: Apache

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Date

Other

Mon, 27 Apr 2026 02:54:20 GMT

X-Dns-Prefetch-Control

Other

off

date: Mon, 27 Apr 2026 02:54:20 GMT
x-dns-prefetch-control: off

Recommendations

Enable compression (gzip/brotli) to improve performance