Developer Essentials · Free Tool
Network Information Viewer
See your connection type, estimated speed, latency and data-saver status — and whether you're online — updating live. Everything is read locally in your browser.
Live — updates when your connection changes
How it works
The Network Information API (navigator.connection) exposes a coarse estimate of your connection: an effective type (slow-2g to 4g) inferred from recent traffic, an estimated downlink in Mbps, round-trip latency, and whether data saver is on. Online/offline status comes from navigator.onLine. Support is currently limited to Chromium-based browsers; the values are estimates, computed on your device and never sent anywhere.