HTTP Headers Analysis for https://s2d.app

Detected Technologies from Headers

See all in URL Inspect 2

Nginx

Ubuntu

HTTP Security Headers

Status

Strict-Transport-Security

Missing

Not configured

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

• Add Strict-Transport-Security header with max-age of at least 1 year
• 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

Accept-Ranges

Performance

bytes

Connection

Performance

close

Vary

Performance

Accept-Encoding

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

Caching Headers

Cache-Control

Caching

no-cache

Etag

Caching

"623b901f-e78"

Expires

Caching

Thu, 01 Jan 1970 00:00:01 GMT

Last-Modified

Caching

Wed, 23 Mar 2022 21:24:47 GMT

cache-control: no-cache
etag: "623b901f-e78"
expires: Thu, 01 Jan 1970 00:00:01 GMT
last-modified: Wed, 23 Mar 2022 21:24:47 GMT

Content Headers

Content-Length

Content

3704

Content-Type

Content

text/html

content-length: 3704
content-type: text/html

Server Headers

Server

nginx/1.18.0 (Ubuntu)

server: nginx/1.18.0 (Ubuntu)

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Date

Other

Fri, 14 Aug 2026 21:38:44 GMT

date: Fri, 14 Aug 2026 21:38:44 GMT

Recommendations

Enable compression (gzip/brotli) to improve performance