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

Detected Technologies from Headers

See all in URL Inspect 7

Cloudflare CDN

Cloudflare Turnstile

Customer.io

Font Awesome

Intercom

Kit

Stripe

HTTP Security Headers

Status

Strict-Transport-Security

Good

max-age=63072000; includeSubDomains

Content-Security-Policy

Basic

report-uri; default-src; base-uri; +11 more 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

• Consider adding 'preload' to HSTS for maximum security
• Improve CSP by adding more specific directives and removing 'unsafe-inline'
• Consider adding Permissions-Policy to control browser features

Performance Headers

Connection

Performance

close

Transfer-Encoding

Performance

chunked

Vary

Performance

Accept, Origin

connection: close
transfer-encoding: chunked
vary: Accept, Origin

Caching Headers

Cache-Control

Caching

max-age=0, private, must-revalidate

cache-control: max-age=0, private, must-revalidate

Content Headers

Content-Type

Content

text/html; charset=utf-8

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

Server Headers

Server

cloudflare

X-Runtime

Server

0.039293

server: cloudflare
x-runtime: 0.039293

CORS Headers

No CORS headers found

Cookies Headers

Set-Cookie

Cookies

set-cookie: XSRF-TOKEN=AT7AwhJ0ARoHVtE-CUu1keBVmqsBrCQjZrgkg1tqnxAkfFT8GNof3u7hh0E9buBBL5eCZtF0Zh1dfDyEWPSrew; path=/; secure
XSRF-TOKEN=AT7AwhJ0ARoHVtE-CUu1keBVmqsBrCQjZrgkg1tqnxAkfFT8GNof3u7hh0E9buBBL5eCZtF0Zh1dfDyEWPSrew; path=/; secure
_mailapp_session=66f14869204ed14c088287aeda3e9a7e; path=/; expires=Sat, 08 Aug 2026 08:54:42 GMT; secure; HttpOnly
__cf_bm=JjOD6o.TZQGZ_m4XmmsCkBO.1lkKcMh8sX9WVmG.grc-1786178682.7555287-1.0.1.1-YUlzhH5eHYFvSItEGw7S1qQqUsvFPCiupST12Sec7oKNw7bShOUTLbtswXtbQUhaCfDVCtUj68s8JEsrfSfZQLZ44JYOzjGTyTZGemSpFOwYlkSuRbYZ5cNsQdSJYXwB; HttpOnly; SameSite=None; Secure; Path=/; Domain=kit.com; Expires=Sat, 08 Aug 2026 09:14:42 GMT

Other Headers

Cf-Cache-Status

Other

DYNAMIC

Cf-Ray

Other

a27d3d9f3be81fe3-IAD

Date

Other

Sat, 08 Aug 2026 08:44:42 GMT

Server-Timing

Other

cfCacheStatus;desc="DYNAMIC", cfEdge;dur=10,cfOrigin;dur=109

X-Permitted-Cross-Domain-Policies

Other

none

X-Request-Id

Other

008d3629-6c3d-44a2-a783-03d7af4d9c9d

cf-cache-status: DYNAMIC
cf-ray: a27d3d9f3be81fe3-IAD
date: Sat, 08 Aug 2026 08:44:42 GMT
server-timing: cfCacheStatus;desc="DYNAMIC", cfEdge;dur=10,cfOrigin;dur=109
x-permitted-cross-domain-policies: none
x-request-id: 008d3629-6c3d-44a2-a783-03d7af4d9c9d

Recommendations

Enable compression (gzip/brotli) to improve performance