HTTP Headers Analysis for https://cdn.builder.io

Detected Technologies from Headers

See all in URL Inspect 3

AWS CloudFront

Google Static File Front End

Express

HTTP Security Headers

Status

Strict-Transport-Security

Missing

Not configured

Content-Security-Policy

Missing

Not configured Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Missing

Not configured

X-Content-Type-Options

Missing

Not configured

Referrer-Policy

Missing

Not configured

Permissions-Policy

Missing

Not configured

Recommendations

• Add Strict-Transport-Security header with max-age of at least 1 year
• Add Content-Security-Policy header to prevent XSS attacks
• Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
• 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

connection: close

Caching Headers

Age

Caching

51

Cache-Control

Caching

public, max-age=5, stale-while-revalidate=86400, stale-if-error=2628000

age: 51
cache-control: public, max-age=5, stale-while-revalidate=86400, stale-if-error=2628000

Content Headers

Content-Length

Content

3263046

Content-Type

Content

text/html; charset=utf-8

content-length: 3263046
content-type: text/html; charset=utf-8

Server Headers

Server

Google Frontend

X-Powered-By

Server

Express

server: Google Frontend
x-powered-by: Express

CORS Headers

Access-Control-Allow-Headers

Cors

content-type, accept, authorization, x-builder-sdk, x-builder-sdk-gen, x-builder-sdk-version, sentry-trace, baggage

Access-Control-Allow-Methods

Cors

GET, POST, PUT, DELETE, OPTIONS, PATCH

Access-Control-Allow-Origin

Cors

*

access-control-allow-headers: content-type, accept, authorization, x-builder-sdk, x-builder-sdk-gen, x-builder-sdk-version, sentry-trace, baggage
access-control-allow-methods: GET, POST, PUT, DELETE, OPTIONS, PATCH
access-control-allow-origin: *

Cookies Headers

No cookies headers found

Other Headers

Access-Control-Allow-Private-Network

Other

true

Cache-Tag

Other

344222511957, 344222511957:site-migration

Cdn-Cache-Control

Other

public, max-age=5, stale-while-revalidate=86400, stale-if-error=2628000

Cdn-Cache-Status

Other

miss

Date

Other

Thu, 23 Apr 2026 01:47:15 GMT

Function-Execution-Id

Other

300w7k7hsrjc

Surrogate-Control

Other

public, max-age=5, s-maxage=5, stale-if-error=2678400, stale-while-revalidate=86400

Traceparent

Other

00-a54c608ed75e294c2dcc9f769a51135d-160d5b459e62c139-00

Via

Other

1.1 google, 1.1 f4c38e024a95b76a27c9f3dc9ff2eda6.cloudfront.net (CloudFront)

X-Amz-Cf-Id

Other

CioUiajloN_j7niGExHokHRwmGEM8a6H4lUta3X4LG09WffkV3wwtg==

X-Amz-Cf-Pop

Other

IAD12-P1

X-Cache

Other

Hit from cloudfront

X-Cloud-Trace-Context

Other

a54c608ed75e294c2dcc9f769a51135d/1589026598099796281

X-Request-Id

Other

59c66420-3eb6-11f1-93c8-33f985ca5acb

access-control-allow-private-network: true
cache-tag: 344222511957, 344222511957:site-migration
cdn-cache-control: public, max-age=5, stale-while-revalidate=86400, stale-if-error=2628000
cdn-cache-status: miss
date: Thu, 23 Apr 2026 01:47:15 GMT
function-execution-id: 300w7k7hsrjc
surrogate-control: public, max-age=5, s-maxage=5, stale-if-error=2678400, stale-while-revalidate=86400
traceparent: 00-a54c608ed75e294c2dcc9f769a51135d-160d5b459e62c139-00
via: 1.1 google, 1.1 f4c38e024a95b76a27c9f3dc9ff2eda6.cloudfront.net (CloudFront)
x-amz-cf-id: CioUiajloN_j7niGExHokHRwmGEM8a6H4lUta3X4LG09WffkV3wwtg==
x-amz-cf-pop: IAD12-P1
x-cache: Hit from cloudfront
x-cloud-trace-context: a54c608ed75e294c2dcc9f769a51135d/1589026598099796281
x-request-id: 59c66420-3eb6-11f1-93c8-33f985ca5acb

Recommendations

Enable compression (gzip/brotli) to improve performance

Consider removing X-Powered-By header to hide server technology