HTTP Headers Analysis for https://rstudio.github.io/crosstalk
Analyzed on November 02, 2025 at 03:43 UTC
URL: https://rstudio.github.io/crosstalk | Status: 200
21 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
"68af1f4f-5d87"
Expires
Caching
Sat, 01 Nov 2025 22:08:03 GMT
Last-Modified
Caching
Wed, 27 Aug 2025 15:07:59 GMT
Content Headers
2 headers
Content-Length
Content
23943
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
9 headers
Date
Other
Sat, 01 Nov 2025 21:58:03 GMT
Via
Other
1.1 varnish
X-Cache
Other
MISS
X-Cache-Hits
Other
0
X-Fastly-Request-Id
Other
6f03caf6ad5977b479335ad857e0d11a1d259fb8
X-Github-Request-Id
Other
3A84:8CC45:16866A8:18A9AB9:6906826A
X-Proxy-Cache
Other
MISS
X-Served-By
Other
cache-ewr-kewr1740038-EWR
X-Timer
Other
S1762034283.097140,VS0,VE28
Recommendations
Enable compression (gzip/brotli) to improve performance
Analysis completed in 0ms