HTTP Headers Analysis for https://selloi.co

Detected Technologies from Headers

See all in URL Inspect 1

Google Static File Front End

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

accept-ranges: bytes
connection: close

Caching Headers

Cache-Control

Caching

no-store

Etag

Caching

"6a7dc67d-1794"

Last-Modified

Caching

Thu, 13 Aug 2026 13:28:29 GMT

cache-control: no-store
etag: "6a7dc67d-1794"
last-modified: Thu, 13 Aug 2026 13:28:29 GMT

Content Headers

Content-Length

Content

6036

Content-Type

Content

text/html

content-length: 6036
content-type: text/html

Server Headers

Server

Google Frontend

server: Google Frontend

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Date

Other

Sat, 15 Aug 2026 02:30:30 GMT

X-Cloud-Trace-Context

Other

40f984bc0f4992e5d6bed9428dec857c;o=1

date: Sat, 15 Aug 2026 02:30:30 GMT
x-cloud-trace-context: 40f984bc0f4992e5d6bed9428dec857c;o=1

Recommendations

Enable compression (gzip/brotli) to improve performance