HTTP Headers Analysis for https://restlet.org

Detected Technologies from Headers

See all in URL Inspect 8

AWS CloudFront

Fastly

GitHub

Google Fonts

Sentry

Varnish

Vimeo

YouTube

HTTP Security Headers

Status

Strict-Transport-Security

Good

max-age=31536001; includeSubDomains

Content-Security-Policy

Strong

default-src; child-src; object-src; +6 more Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Excellent

DENY

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
• Consider adding Permissions-Policy to control browser features

Performance Headers

Accept-Ranges

Performance

bytes

Connection

Performance

close

Vary

Performance

Accept-Encoding, Origin

accept-ranges: bytes
connection: close
vary: Accept-Encoding, Origin

Caching Headers

Age

Caching

95

Cache-Control

Caching

max-age=600

Etag

Caching

"69e09996-195d"

Expires

Caching

Thu, 16 Jul 2026 04:05:13 GMT

Last-Modified

Caching

Thu, 16 Apr 2026 08:11:02 GMT

age: 95
cache-control: max-age=600
etag: "69e09996-195d"
expires: Thu, 16 Jul 2026 04:05:13 GMT
last-modified: Thu, 16 Apr 2026 08:11:02 GMT

Content Headers

Content-Length

Content

6493

Content-Type

Content

text/html; charset=utf-8

content-length: 6493
content-type: text/html; charset=utf-8

Server Headers

Server

GitHub.com

server: GitHub.com

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Date

Other

Wed, 22 Jul 2026 08:55:05 GMT

Via

Other

1.1 varnish, 1.1 b30e8d5c8b76c102ed260379b18e1d52.cloudfront.net (CloudFront)

X-Amz-Cf-Id

Other

OxnhSaLk1mIhsmwYf5b-7POzr081PhTWQ2bzOMDnQc5tBJIt2kfhXA==

X-Amz-Cf-Pop

Other

IAD55-P6

X-Cache

Other

Hit from cloudfront

X-Cache-Hits

Other

1

X-Fastly-Request-Id

Other

5300fc0366e8481c54b5f82456d8738d3be5bfce

X-Github-Request-Id

Other

E6A6:3F52E:1F9287:23FE12:6A585620

X-Proxy-Cache

Other

MISS

X-Served-By

Other

cache-iad-kcgs7200134-IAD

X-Timer

Other

S1784710506.657175,VS0,VE1

date: Wed, 22 Jul 2026 08:55:05 GMT
via: 1.1 varnish, 1.1 b30e8d5c8b76c102ed260379b18e1d52.cloudfront.net (CloudFront)
x-amz-cf-id: OxnhSaLk1mIhsmwYf5b-7POzr081PhTWQ2bzOMDnQc5tBJIt2kfhXA==
x-amz-cf-pop: IAD55-P6
x-cache: Hit from cloudfront
x-cache-hits: 1
x-fastly-request-id: 5300fc0366e8481c54b5f82456d8738d3be5bfce
x-github-request-id: E6A6:3F52E:1F9287:23FE12:6A585620
x-proxy-cache: MISS
x-served-by: cache-iad-kcgs7200134-IAD
x-timer: S1784710506.657175,VS0,VE1

Recommendations

Enable compression (gzip/brotli) to improve performance