HTTP Headers Analysis for https://butterflynetwork.com

Detected Technologies from Headers

See all in URL Inspect 2

AWS CloudFront

Cloudflare CDN

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=31536000

Content-Security-Policy

Weak

upgrade-insecure-requests 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-when-cross-origin

Permissions-Policy

Missing

Not configured

Recommendations

• Increase HSTS max-age to at least 1 year and add includeSubDomains
• Significantly strengthen CSP directives
• 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

Age

Caching

38588

Last-Modified

Caching

Fri, 08 May 2026 19:20:34 GMT

age: 38588
last-modified: Fri, 08 May 2026 19:20:34 GMT

Content Headers

Content-Type

Content

text/html; charset=utf-8

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

Server Headers

Server

cloudflare

server: cloudflare

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Cf-Cache-Status

Other

HIT

Cf-Ray

Other

9f8ad351ddc5207e-IAD

Date

Other

Sat, 09 May 2026 06:03:05 GMT

Surrogate-Control

Other

max-age=2147483647

Surrogate-Key

Other

english.butterflynetwork.com 5a0cbe08f1138d000147a9d4 pageId:61279bf691b0d728b981346f

Via

Other

1.1 2af44885a7fc4faf5a3444e606d6c02c.cloudfront.net (CloudFront)

X-Amz-Cf-Id

Other

wltNxGne58Hx9u8-fKUqL4ClcVY9jXpMh5QwGzO_CVaC8XHMZ8gwWg==

X-Amz-Cf-Pop

Other

IAD61-P10

X-Cache

Other

Hit from cloudfront

X-Lambda-Id

Other

d205a855-628c-44f4-a963-ef1b79d8c34d

X-Wf-Region

Other

us-east-1

cf-cache-status: HIT
cf-ray: 9f8ad351ddc5207e-IAD
date: Sat, 09 May 2026 06:03:05 GMT
surrogate-control: max-age=2147483647
surrogate-key: english.butterflynetwork.com 5a0cbe08f1138d000147a9d4 pageId:61279bf691b0d728b981346f
via: 1.1 2af44885a7fc4faf5a3444e606d6c02c.cloudfront.net (CloudFront)
x-amz-cf-id: wltNxGne58Hx9u8-fKUqL4ClcVY9jXpMh5QwGzO_CVaC8XHMZ8gwWg==
x-amz-cf-pop: IAD61-P10
x-cache: Hit from cloudfront
x-lambda-id: d205a855-628c-44f4-a963-ef1b79d8c34d
x-wf-region: us-east-1

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching