What Is Network Information?
Modern browsers expose details about your network connection through the Network Information API. Websites can detect whether you're on Wi-Fi, cellular, or ethernet, estimate your bandwidth, and even tell if you have data-saving mode enabled.
This is useful for sites that adapt content based on connection quality — but it also adds another data point to your browser fingerprint, potentially helping trackers identify you across sessions.
What This Tool Shows
- Connection type (Wi-Fi, cellular, ethernet, etc.)
- Effective connection speed tier (4G, 3G, 2G)
- Estimated downlink speed in Mbps
- Round-trip time (latency) in milliseconds
- Whether Save-Data mode is active
Why This Matters
Combined with other browser signals, your connection type and speed estimate can help narrow down your identity. Two users on the same Wi-Fi at a café may share an IP — but different downlink speeds or latency values can help distinguish them.
This tool shows you what's visible in real time. As your connection changes (switching from Wi-Fi to cellular, for example), the values update automatically.
Privacy Note
All information shown is available to every website you visit. We don't store, track, or log any of your data — and this tool runs entirely in your browser with no external requests.