Network Latency Probe

Send several rounds of requests to this site and a set of public hosts, then report average, minimum, maximum, jitter and packet loss to judge network quality and reachability.

4 rounds per target
TargetAvgMinMaxJitterLoss
This site—————
Cloudflare—————
aliyun.com—————
tencentcloud—————
baidu.com—————
github.com—————
apple.com—————
google.com—————

Values are milliseconds. Bars cap at 300 ms: green below 80 ms, amber from 80 to 200 ms, red above 200 ms or with packet loss.

Uses fetch TTFB as an approximation of ping: timing runs from request start to response headers, including DNS, TCP, TLS and first-byte time, so numbers are a bit higher than ICMP ping.

Requests go straight from your browser to each host. This site only provides the measuring logic and does not record results.

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