HTTP Headers Analysis for https://cdn.codewars.com

Detected Technologies from Headers

See all in URL Inspect 2

Cloudflare NEL Monitoring

Cloudflare CDN

HTTP Security Headers

Status

Strict-Transport-Security

Missing

Not configured

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-when-cross-origin

Permissions-Policy

Missing

Not configured

Recommendations

• Add Strict-Transport-Security header with max-age of at least 1 year
• 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

149325

Cache-Control

Caching

max-age=0, private, must-revalidate

Last-Modified

Caching

Tue, 28 Apr 2026 09:33:59 GMT

age: 149325
cache-control: max-age=0, private, must-revalidate
last-modified: Tue, 28 Apr 2026 09:33:59 GMT

Content Headers

Content-Type

Content

text/html; charset=utf-8

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

Server Headers

Server

cloudflare

X-Runtime

Server

0.154821

server: cloudflare
x-runtime: 0.154821

CORS Headers

No CORS headers found

Cookies Headers

Set-Cookie

Cookies

set-cookie: CSRF-TOKEN=jlJyX4mVz%2FJscNWMvD6AwEMNWm7UFyiv8k884q28qGXVhqRfc9pUXY0GxLA%2FMV4w0rgH58nepErnqtMpJiRC6A%3D%3D; path=/; SameSite=Lax
_session_id=500c16d1ed14c6783b41b6d2329b914a; path=/; expires=Sun, 03 May 2026 03:02:44 GMT; HttpOnly; SameSite=Lax

Other Headers

Cf-Cache-Status

Other

DYNAMIC

Cf-Ray

Other

9f434f2d6aae3938-IAD

Date

Other

Thu, 30 Apr 2026 03:02:44 GMT

Nel

Other

Report-To Group cf-nel max-age: 1w

success: 0.0%

Report-To

Other

Group cf-nel max-age: 1w

Endpoint 1 https://a.nel.cloudflare.com/report/v4?s=P%2B9SquYzp9Tr7gdlZv6vH3oFmthDgaW8NuxDtUBXLabLIg7IrBkKS81l7KGgOuP8U7hyS87%2BBJaV8C1OY8sa8acCkpHwfP9cI06i9ABYJBU%2BiL7lhxdvOiInoGyRt%2FR4dP0%3D

Surrogate-Control

Other

max-age=432000

Surrogate-Key

Other

wf.codewars.com 6674f0cdb5b7b401612cf015 pageId:6674f0cdb5b7b401612cf017 6674f0cdb5b7b401612cf028 6674f0cdb5b7b401612cf02b

Via

Other

1.1 google

X-Cluster-Name

Other

us-east-1-prod-hosting-red

X-Download-Options

Other

noopen

X-Lambda-Id

Other

5b17e24d-9f4c-4c6f-8985-0622c75427da

X-Permitted-Cross-Domain-Policies

Other

none

X-Request-Id

Other

cefed5ca-2394-46f6-9592-408d68e0cff6

X-Wf-Region

Other

us-east-1

cf-cache-status: DYNAMIC
cf-ray: 9f434f2d6aae3938-IAD
date: Thu, 30 Apr 2026 03:02:44 GMT
nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
report-to: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=P%2B9SquYzp9Tr7gdlZv6vH3oFmthDgaW8NuxDtUBXLabLIg7IrBkKS81l7KGgOuP8U7hyS87%2BBJaV8C1OY8sa8acCkpHwfP9cI06i9ABYJBU%2BiL7lhxdvOiInoGyRt%2FR4dP0%3D"}]}
surrogate-control: max-age=432000
surrogate-key: wf.codewars.com 6674f0cdb5b7b401612cf015 pageId:6674f0cdb5b7b401612cf017 6674f0cdb5b7b401612cf028 6674f0cdb5b7b401612cf02b
via: 1.1 google
x-cluster-name: us-east-1-prod-hosting-red
x-download-options: noopen
x-lambda-id: 5b17e24d-9f4c-4c6f-8985-0622c75427da
x-permitted-cross-domain-policies: none
x-request-id: cefed5ca-2394-46f6-9592-408d68e0cff6
x-wf-region: us-east-1

Recommendations

Enable compression (gzip/brotli) to improve performance