Browser-based speed test - measure download, upload and network latency with real-time progress
Measure download, upload and latency from your browser with live progress, plus a custom test server option.
了解网速测试的测量原理、结果解读与常见问题。How the speed test works, reading the results, and answers to common questions.
工具通过浏览器与测速源服务器传输随机测试数据:下载时流式接收并实时统计,上传时按块发送不可压缩数据,延迟则以多次往返取中位数。
The tool transfers random test data to/from a test server: downloading streams and stats in real time, uploading sends incompressible chunks, and latency is the median of several round trips.
默认使用 Cloudflare 测速端点,也可自定义测速源地址。
It uses Cloudflare's speed endpoint by default, or a custom test server of your choice.
下载与上传以 Mbps 计,延迟以毫秒计;抖动越小连接越稳定。有线网络通常优于 Wi-Fi,高峰时段速度可能下降。
Download and upload are in Mbps, latency in milliseconds; lower jitter means a steadier connection. Wired beats Wi-Fi, and speeds can drop at peak times.
每次测速会传输约几十 MB 测试数据,请在使用移动数据时注意。Each test transfers roughly tens of MB; keep this in mind on mobile data.
实际速度受 Wi-Fi 信号、路由器、设备与时段影响,多次测试取平均更准确。Real speed depends on Wi-Fi, router, device and time of day; average several runs for accuracy.
可点击「重置」恢复默认源,或更换为其他支持 CORS 的测速端点。Click "Reset" to restore the default, or use another CORS-enabled speed endpoint.
