HTTP Headers Analysis for https://app.readcube.com

Detected Technologies from Headers

See all in URL Inspect 2

AWS CloudFront

Amazon S3

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=86400

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

Accept-Ranges

Performance

bytes

Connection

Performance

close

accept-ranges: bytes
connection: close

Caching Headers

Cache-Control

Caching

no-store

Etag

Caching

"102c83ff4000babc24d8beecbc6dd757"

Last-Modified

Caching

Tue, 22 Sep 2026 09:17:06 GMT

cache-control: no-store
etag: "102c83ff4000babc24d8beecbc6dd757"
last-modified: Tue, 22 Sep 2026 09:17:06 GMT

Content Headers

Content-Length

Content

23133

Content-Type

Content

text/html

content-length: 23133
content-type: text/html

Server Headers

Server

AmazonS3

server: AmazonS3

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Alt-Svc

Other

h3=":443"; ma=86400

Date

Other

Sat, 03 Oct 2026 22:51:26 GMT

Via

Other

1.1 d7441270a7210a12742f2ba6f1dfb028.cloudfront.net (CloudFront)

X-Amz-Cf-Id

Other

_rY0lX8vp7eYKZTdng7_-jKcxgWFYzdAzAvFFOu_Jd9HegvCwz94Og==

X-Amz-Cf-Pop

Other

IAD61-P2

X-Cache

Other

Miss from cloudfront

alt-svc: h3=":443"; ma=86400
date: Sat, 03 Oct 2026 22:51:26 GMT
via: 1.1 d7441270a7210a12742f2ba6f1dfb028.cloudfront.net (CloudFront)
x-amz-cf-id: _rY0lX8vp7eYKZTdng7_-jKcxgWFYzdAzAvFFOu_Jd9HegvCwz94Og==
x-amz-cf-pop: IAD61-P2
x-cache: Miss from cloudfront

Recommendations

Enable compression (gzip/brotli) to improve performance