HTTP Headers Analysis for https://zotero.org

Detected Technologies from Headers

See all in URL Inspect 5

AWS API Gateway

Apache

AWS

AWS CloudFront

Amazon S3

HTTP Security Headers

Status

Strict-Transport-Security

Excellent

max-age=31536000; includeSubDomains; preload

Content-Security-Policy

Strong

default-src; script-src; style-src; +5 more Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Good

SAMEORIGIN

X-Content-Type-Options

Missing

Not configured

Referrer-Policy

Missing

Not configured

Permissions-Policy

Missing

Not configured

Recommendations

• 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

Connection

Performance

close

Transfer-Encoding

Performance

chunked

Vary

Performance

Accept-Encoding

connection: close
transfer-encoding: chunked
vary: Accept-Encoding

Caching Headers

No caching headers found

Content Headers

Content-Type

Content

text/html; charset=UTF-8

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

Server Headers

Server

Apache

server: Apache

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Alt-Svc

Other

h3=":443"; ma=86400

Date

Other

Tue, 28 Jul 2026 14:00:29 GMT

Via

Other

1.1 1ae744582b6105b6f02e8971c5c713be.cloudfront.net (CloudFront)

X-Amz-Cf-Id

Other

COaE2ukBsbyxJ7ZRCjfdo2LFFj3IWwYjBIPt0ylCUFlvm5GFANhrvA==

X-Amz-Cf-Pop

Other

IAD55-P9

X-Cache

Other

Miss from cloudfront

alt-svc: h3=":443"; ma=86400
date: Tue, 28 Jul 2026 14:00:29 GMT
via: 1.1 1ae744582b6105b6f02e8971c5c713be.cloudfront.net (CloudFront)
x-amz-cf-id: COaE2ukBsbyxJ7ZRCjfdo2LFFj3IWwYjBIPt0ylCUFlvm5GFANhrvA==
x-amz-cf-pop: IAD55-P9
x-cache: Miss from cloudfront

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching