HTTP Headers Analysis for https://diffchecker.com
Analyzed on November 02, 2025 at 19:09 UTC
URL: https://diffchecker.com | Status: 200
15 Headers
Total Found
HTTP Security Headers
Status
Strict-Transport-Security
Present
max-age=15724800; includeSubdomains
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
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • 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
Connection
Performance
keep-alive
Transfer-Encoding
Performance
chunked
Vary
Performance
Accept-Encoding
Caching Headers
2 headers
Age
Caching
9493
Cache-Control
Caching
public,s-maxage=14400,max-age=0
Content Headers
1 headers
Content-Type
Content
text/html; charset=utf-8
Server Headers
2 headers
Server
Server
cloudflare
X-Powered-By
Server
Next.js
CORS Headers
0 headers
No CORS headers found
Cookies Headers
0 headers
No cookies headers found
Other Headers
6 headers
Alt-Svc
Other
h3=":443"; ma=86400
Cf-Cache-Status
Other
HIT
Cf-Ray
Other
9985ed980dbe0688-IAD
Date
Other
Sun, 02 Nov 2025 19:09:45 GMT
Nel
Other
{"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Report-To
Other
{"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=r63Fy%2FMo9bKL2TK7%2FHwXuYqzuWrWT0%2B3kc2PIKoZ70IQYVs74vgbF8mgKw64w7MqjmfalCB893x3spa9HIYH3iGmMdTR9kS7jvpAfZBv"}]}
Recommendations
Enable compression (gzip/brotli) to improve performance
Consider removing X-Powered-By header to hide server technology
Analysis completed in 0ms