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

Detected Technologies from Headers

See all in URL Inspect 2

AWS CloudFront

Amazon S3

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

Accept-Ranges

Performance

bytes

Connection

Performance

close

accept-ranges: bytes
connection: close

Caching Headers

Age

Caching

24857481

Cache-Control

Caching

public, max-age=31536000

Etag

Caching

"b2388c6f180df0cb0e96c670597ffa48"

Last-Modified

Caching

Thu, 18 Dec 2025 07:54:27 GMT

age: 24857481
cache-control: public, max-age=31536000
etag: "b2388c6f180df0cb0e96c670597ffa48"
last-modified: Thu, 18 Dec 2025 07:54:27 GMT

Content Headers

Content-Length

Content

12831

Content-Type

Content

text/html

content-length: 12831
content-type: text/html

Server Headers

Server

flipsnack

server: flipsnack

CORS Headers

Access-Control-Allow-Headers

Cors

*

Access-Control-Allow-Methods

Cors

GET, PUT, POST

Access-Control-Allow-Origin

Cors

*

access-control-allow-headers: *
access-control-allow-methods: GET, PUT, POST
access-control-allow-origin: *

Cookies Headers

No cookies headers found

Other Headers

Alt-Svc

Other

h3=":443"; ma=86400

Date

Other

Sat, 20 Dec 2025 10:52:01 GMT

Via

Other

1.1 f9c59ce0e830fcb72cbcdb26622739f0.cloudfront.net (CloudFront)

X-Amz-Cf-Id

Other

-erEuvvr_e_ILi2xTZzW1GETB_OzaVJbqWL-2psof-6BiKe2HPjFZw==

X-Amz-Cf-Pop

Other

IAD12-P4

X-Amz-Server-Side-Encryption

Other

AES256

X-Amz-Version-Id

Other

arIUuN3_PYLecnUlzZeJ55vN3RiiVngW

X-Cache

Other

Error from cloudfront

alt-svc: h3=":443"; ma=86400
date: Sat, 20 Dec 2025 10:52:01 GMT
via: 1.1 f9c59ce0e830fcb72cbcdb26622739f0.cloudfront.net (CloudFront)
x-amz-cf-id: -erEuvvr_e_ILi2xTZzW1GETB_OzaVJbqWL-2psof-6BiKe2HPjFZw==
x-amz-cf-pop: IAD12-P4
x-amz-server-side-encryption: AES256
x-amz-version-id: arIUuN3_PYLecnUlzZeJ55vN3RiiVngW
x-cache: Error from cloudfront

Recommendations

Enable compression (gzip/brotli) to improve performance