HTTP Headers Analysis for https://www.rainviewer.com

Detected Technologies from Headers

See all in URL Inspect 1

Nginx

HTTP Security Headers

Status

Strict-Transport-Security

Excellent

max-age=31536000; includeSubDomains; 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

Good

strict-origin

Permissions-Policy

Present

geolocation=(self), fullscreen=(self)

Recommendations

• Significantly strengthen CSP directives

Performance Headers

Accept-Ranges

Performance

bytes

Connection

Performance

close

Vary

Performance

Accept-Encoding, Accept

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

Caching Headers

Etag

Caching

"6a95c9a7-1f29c"

Last-Modified

Caching

Mon, 31 Aug 2026 18:36:23 GMT

etag: "6a95c9a7-1f29c"
last-modified: Mon, 31 Aug 2026 18:36:23 GMT

Content Headers

Content-Length

Content

127644

Content-Type

Content

text/html

content-length: 127644
content-type: text/html

Server Headers

Server

nginx

server: nginx

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Alt-Svc

Other

h3=":443"; ma=86400

Date

Other

Fri, 04 Sep 2026 12:46:26 GMT

Link

Other

URL /.well-known/api-catalog

rel=api-catalog type=application/linkset+json

URL /llms.txt

rel=alternate type=text/plain title=llms.txt

URL /llms-full.txt

rel=alternate type=text/plain title=llms-full.txt

alt-svc: h3=":443"; ma=86400
date: Fri, 04 Sep 2026 12:46:26 GMT
link: </.well-known/api-catalog>; rel="api-catalog"; type="application/linkset+json", </llms.txt>; rel="alternate"; type="text/plain"; title="llms.txt", </llms-full.txt>; rel="alternate"; type="text/plain"; title="llms-full.txt"

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching