HTTP Headers Analysis for https://www.omnisend.com

Detected Technologies from Headers

See all in URL Inspect 4

Cloudflare NEL Monitoring

Cloudflare CDN

Envoy

PHP

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=15552000

Content-Security-Policy

Weak

frame-ancestors; base-uri Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Good

SAMEORIGIN

X-Content-Type-Options

Good

nosniff

Referrer-Policy

Missing

Not configured

Permissions-Policy

Missing

Not configured

Recommendations

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

Cache-Control

Caching

max-age=600,public

Expires

Caching

Fri, 01 May 2026 17:43:48 GMT

Pragma

Caching

no-cache

cache-control: max-age=600,public
expires: Fri, 01 May 2026 17:43:48 GMT
pragma: no-cache

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

Set-Cookie

Cookies

set-cookie: PHPSESSID=s4cubs4jlr2bpgeaoi7gsjoqi5; path=/
__cf_bm=qcNixXpU2tmV00kDPjOKPZk9yRJTjG8Wx_.L.56QXaA-1777656828-1.0.1.1-vPDRg1ws3GFJFbyBFBxMhEuQbCbsK0zgYFg7m1EDXRkYMTwVfACReeDgpUy1.ecjY.FzAD_FT9xP7ntdbwRjGxh9MS73HfFHdKMmK5eiLQI; path=/; expires=Fri, 01-May-26 18:03:48 GMT; domain=.www.omnisend.com; HttpOnly; Secure; SameSite=None

Other Headers

Alt-Svc

Other

h3=":443"; ma=86400

Cf-Cache-Status

Other

DYNAMIC

Cf-Ray

Other

9f508886c9ba05d5-IAD

Date

Other

Fri, 01 May 2026 17:33:48 GMT

Link

Other

URL https://www.omnisend.com/wp-json/

rel=https://api.w.org/

URL https://www.omnisend.com/wp-json/wp/v2/pages/10

rel=alternate type=application/json

URL https://www.omnisend.com/

rel=shortlink

Nel

Other

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

success: 1.0%

Report-To

Other

Group cf-nel max-age: 1w

Endpoint 1 https://a.nel.cloudflare.com/report/v4?s=obsDdTrSKgFCh76jTsZQ0iDHpTebbKpN4a0KE5Krrz7d49ohGlB4VuuwU8EAnBX2JYZwppnPcC2ezMq02RABEaU7j%2Bm7TaGOdOZ6Du0XdajyRh8LcQmIMVCqLfOZnDx%2FJn4%3D

X-Envoy-Upstream-Service-Time

Other

527

alt-svc: h3=":443"; ma=86400
cf-cache-status: DYNAMIC
cf-ray: 9f508886c9ba05d5-IAD
date: Fri, 01 May 2026 17:33:48 GMT
link: <https://www.omnisend.com/wp-json/>; rel="https://api.w.org/", <https://www.omnisend.com/wp-json/wp/v2/pages/10>; rel="alternate"; type="application/json", <https://www.omnisend.com/>; rel=shortlink
nel: {"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=obsDdTrSKgFCh76jTsZQ0iDHpTebbKpN4a0KE5Krrz7d49ohGlB4VuuwU8EAnBX2JYZwppnPcC2ezMq02RABEaU7j%2Bm7TaGOdOZ6Du0XdajyRh8LcQmIMVCqLfOZnDx%2FJn4%3D"}],"group":"cf-nel","max_age":604800}
x-envoy-upstream-service-time: 527

Recommendations

Enable compression (gzip/brotli) to improve performance