Test APIs and network utilities
Check HTTP headers. Analyze response headers from any URL.
Test REST APIs. Send HTTP requests and view responses.
Check CORS configuration. Verify Cross-Origin Resource Sharing settings.
Check SSL certificate. Verify SSL certificate validity and expiration.
Lookup DNS records. Query A, AAAA, MX, TXT, and other DNS records.
Test ping to server. Measure latency and packet loss to hosts.