HTTP Headers Analysis for https://selenium.dev
Analyzed on November 02, 2025 at 19:09 UTC
URL: https://selenium.dev | Status: 200
22 Headers
Total Found
HTTP Security Headers
Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Missing
Not configured
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
3 headers
Accept-Ranges
Performance
bytes
Connection
Performance
keep-alive
Vary
Performance
Accept-Encoding
Caching Headers
5 headers
Age
Caching
0
Cache-Control
Caching
max-age=600
Etag
Caching
"6903602c-77ba"
Expires
Caching
Sun, 02 Nov 2025 17:10:29 GMT
Last-Modified
Caching
Thu, 30 Oct 2025 12:55:08 GMT
Content Headers
2 headers
Content-Length
Content
30650
Content-Type
Content
text/html; charset=utf-8
Server Headers
1 headers
Server
Server
GitHub.com
CORS Headers
1 headers
Access-Control-Allow-Origin
Cors
*
Cookies Headers
0 headers
No cookies headers found
Other Headers
10 headers
Date
Other
Sun, 02 Nov 2025 19:09:52 GMT
Via
Other
1.1 varnish
X-Cache
Other
HIT
X-Cache-Hits
Other
0
X-Fastly-Request-Id
Other
8e2fba18fe97db3a0c2ca586296797a5767bd075
X-Github-Request-Id
Other
4B71:29729A:225196C:271F5D9:69078E2D
X-Origin-Cache
Other
HIT
X-Proxy-Cache
Other
MISS
X-Served-By
Other
cache-nyc-kteb1890065-NYC
X-Timer
Other
S1762110593.518428,VS0,VE16
Recommendations
Enable compression (gzip/brotli) to improve performance
Analysis completed in 376ms