HTTP Headers Analysis for https://iristel.com

Detected Technologies from Headers

See all in URL Inspect 1

Nginx

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=31536000; preload

Content-Security-Policy

Weak

frame-ancestors 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

• Increase HSTS max-age to at least 1 year and add includeSubDomains
• Significantly strengthen CSP directives
• 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, user-agent,accept-encoding

connection: close
transfer-encoding: chunked
vary: Accept-Encoding, user-agent,accept-encoding

Caching Headers

Cache-Control

Caching

no-cache, must-revalidate

Expires

Caching

Thu, 01 Jan 1970 00:00:00 GMT

cache-control: no-cache, must-revalidate
expires: Thu, 01 Jan 1970 00:00:00 GMT

Content Headers

Content-Type

Content

text/html;charset=utf-8

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

Server Headers

Server

nginx

server: nginx

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

D-Geo

Other

US

Date

Other

Sun, 03 May 2026 00:19:28 GMT

Speculation-Rules

Other

"https://static.cdn-website.com/speculations/rules/prerender-1.0.3.json"

d-geo: US
date: Sun, 03 May 2026 00:19:28 GMT
speculation-rules: "https://static.cdn-website.com/speculations/rules/prerender-1.0.3.json"

Recommendations

Enable compression (gzip/brotli) to improve performance