What is the Network Information API?

The Network Information API is a browser interface that provides network connection information via navigator.connection, including connection type (WiFi, 4G, etc.), effective connection type, downlink bandwidth, and round-trip time (RTT). Not all browsers support this API; Chrome and Edge have good support.

Why do some fields show "Unknown"?

Some information depends on specific browser API support. For example, the Network Information API is currently mainly supported in Chromium-based browsers, with limited support in Safari and Firefox. The Battery API has also been removed from some browsers for privacy reasons. These will cause corresponding fields to display as "Unknown".

Is this information uploaded to any server?

No. All data in this tool is obtained and processed locally in your browser and is never uploaded to any server. The page works even when offline. You can use it with confidence.

Are the RTT and downlink speed values accurate?

The RTT and downlink speed returned by the Network Information API are estimated values based on the browser's connection type, not actual measured values. They reflect typical performance for the connection type. Actual speeds may vary due to network congestion, signal strength, and other factors. For precise speed testing, we recommend using a dedicated speed test tool.

Network Information

Network connection information

🌐 Network Connection

Connection TypeUnknown

Effective TypeUnknown

Downlink SpeedUnknown

Latency (RTT)Unknown

Save Data ModeDisabled

🖥️ Browser Info

Language

PlatformUnknown

Timezone

CPU CoresUnknown

Device MemoryUnknown

📐 Screen Info

Screen Resolution0 × 0

Color DepthUnknown

Touch SupportNot supported

🔋 Battery Info

Your browser does not support the Battery Status API

🔒 Privacy & Preferences

CookiesDisabled

Do Not TrackNot set

📄 User Agent

Network Information Tool Usage Guide

Main Features

Network Connection — Displays connection type, effective type, downlink speed, latency, etc.
Browser Environment — Language, Cookies, Do Not Track settings, etc.
Screen Info — Resolution, color depth, touch support, etc.
Battery Status — Battery level, charging status (if supported)

Use Cases

Troubleshoot network connection issues
Check browser compatibility information
Debug mobile network status
Collect device environment info for feedback

Network Information

Network Information Tool Usage Guide

Main Features

Use Cases

常见问题

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