Zulu NetDiag — Browser Quick Test

What this measures

One click runs a safe, bounded HTTPS test against the diagnostic server over two paths and compares them:

Each path measures time-to-first-byte, a bounded download, and a bounded upload of synthetic random data. Nothing from this computer is inspected or transmitted except the measurements themselves. The browser test cannot measure ICMP latency, trace the route, test MTU, or run iperf — the PowerShell client below is the authoritative detailed test.

Approximate traffic: up to 50 MB down + 16 MB up (25 + 8 per path).