Fast isn’t always stable.
Jitterglass is an internet stability test for gaming. It follows your connection over 20 minutes and shows latency spikes, jitter, loss bursts, and disconnects — with measurement gaps marked separately from connection problems.
Measurement is not available yet.
This page is the basic version for devices that cannot run the modern interface. It uses plain HTML and CSS only. When a verified measurement mode exists for your device, it will be offered here.