Show the raw numbers
A grade is convenient, but median, p95, jitter and throughput remain visible.
About
Why Connection Vitals exists
Most people do not need another number. They need to know why a connection feels bad, what to change next, and whether the change worked.
Diagnosis over spectacle
Connection Vitals is an independent browser-based network diagnostic utility. The first product focuses on bufferbloat and loaded latency because these can explain why a connection with plenty of bandwidth still feels laggy when busy.
Principles
State limitations
Browser tests are measurements of a path and moment in time, not absolute truth about an ISP or router.
Make fixes testable
Before/after comparison turns advice into an experiment rather than a guess.
Independence
Connection Vitals is not affiliated with Cloudflare, Waveform, an ISP or a router manufacturer. The current measurement layer uses the MIT-licensed Cloudflare Speedtest library and Cloudflare public measurement endpoints; details are published in Methodology and Licenses.