Connection & Speed Diagnostic
Measure HTTP ping round-trip latency, jitter, Network API connection parameters, and controlled download throughput directly from your browser.
Connection Diagnostic Control
Connection Profile & Network Suitability
Speed Diagnostic JSON Output
{
"latency": null,
"downloadMbps": null,
"networkApi": {
"effectiveType": "Not exposed by this browser",
"downlinkEstimate": "Not exposed by this browser",
"rttEstimate": "Not exposed by this browser"
},
"profileVerdict": "Awaiting Diagnostic"
}Measurement Scope & Accuracy Disclaimers
Approximate Application Measurement: Browser-based network tests measure single-thread HTTP application layer throughput and round-trip latency. Results are influenced by local browser main-thread activity, OS socket buffers, and current network congestion.
Non-ISP Certified: Results do not represent ISP-certified physical line capacity or dedicated hardware bandwidth tests.
HTTP Round-Trip Latency
Latency measures the millisecond time delay between a client request and the initial server response header over your local network.
Connection Quality Ratings
- < 60 msOptimal (Real-time / Video)
- 60 - 150 msGood (Web APIs & Apps)
- 150 - 300 msModerate (Mobile Networks)
- > 300 msHigh Latency Alert
Recommended Solution: Application Performance Engineering
Building real-time web services, mobile API backends, or latency-critical applications? Snow provides technical architecture and optimization.