HTTP Headers Analysis for https://kotlinlang.org
Analyzed on November 02, 2025 at 19:09 UTC
URL: https://kotlinlang.org | Status: 200
18 Headers
Total Found
HTTP Security Headers
Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Present
same-origin
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-Content-Type-Options: nosniff
- • Consider adding Permissions-Policy to control browser features
Performance Headers
3 headers
Accept-Ranges
Performance
bytes
Connection
Performance
keep-alive
Vary
Performance
Accept-Encoding
Caching Headers
2 headers
Etag
Caching
"9d3b7292d7672fe3801d5e0cfe348a7c"
Last-Modified
Caching
Fri, 31 Oct 2025 16:36:03 GMT
Content Headers
2 headers
Content-Length
Content
260647
Content-Type
Content
text/html; charset=utf-8
Server Headers
1 headers
Server
Server
AmazonS3
CORS Headers
0 headers
No CORS headers found
Cookies Headers
0 headers
No cookies headers found
Other Headers
7 headers
Date
Other
Sun, 02 Nov 2025 19:09:43 GMT
Via
Other
1.1 7a02cda974acf43f625765ecd92319c8.cloudfront.net (CloudFront)
X-Amz-Cf-Id
Other
obAOBALsoPBZzQ_ms4rOtEytphBx-qnlUAwwoTKQWgFDpIb5_luo5A==
X-Amz-Cf-Pop
Other
IAD89-P4
X-Amz-Meta-Mtime
Other
1761927964
X-Amz-Server-Side-Encryption
Other
AES256
X-Cache
Other
Miss from cloudfront
Recommendations
Enable compression (gzip/brotli) to improve performance
Add Cache-Control header to optimize caching
Analysis completed in 1ms