Web Performance and Security Testing Tools
A curated list of online tools for analyzing JavaScript usage, redirects, SSL configuration, and HTTP Strict Transport Security (HSTS) compliance.
Tools
- Varvy JS Tool — Analyzes external and internal JavaScript usage on a page. varvy.com/tools/js
- Varvy Redirect Checker — Displays redirects from www/non-www and HTTP/HTTPS. varvy.com/tools/redirects
- HSTS Preload — Submit your domain to Chrome's HSTS preload list. hstspreload.appspot.com
- SSL Labs SSL Test — Deep analysis of SSL/TLS configuration and grading. ssllabs.com/ssltest
Notes
- HSTS preloading is permanent — only submit if you are committed to HTTPS-only for the domain.
- SSL Labs grades A+ for sites with HSTS headers and strong cipher suites.