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Bluetooth Signal Tester

Test Bluetooth Low Energy (BLE) devices in your browser. Scan, connect to nearby Bluetooth devices, read GATT services, and monitor signal strength (RSSI).

Ready to scan
Device Info Device information
Signal Signal strength (RSSI)
RSSI:RSSI data unavailable
0 dBm
RSSI may require experimental flags in Chrome. Check chrome://flags/#enable-experimental-web-platform-features
Services GATT Services

No services found. Connect to a device first.

About Bluetooth Signal Tester

Test Bluetooth Low Energy (BLE) devices directly in your browser using the Web Bluetooth API. Scan for nearby devices, connect to them, read GATT services and characteristics, and monitor signal strength (RSSI) when available. Perfect for IoT developers, Bluetooth debugging, and hardware testing.

How to use:

  1. Click 'Scan for devices' to discover nearby Bluetooth Low Energy devices.
  2. Select a device from the browser's device picker dialog.
  3. View device information, including name, ID, and connection status.
  4. Explore GATT services and characteristics available on the connected device.
  5. Monitor signal strength (RSSI) if your browser supports the Scanning API (experimental).
  6. Use 'Disconnect' to close the connection when finished.

Browser Compatibility

  • Chrome/Edge (Desktop & Android): Full support
  • Opera: Supported
  • Safari/Firefox: Not supported
  • HTTPS required for security
  • RSSI scanning requires experimental flags in Chrome

Technical References

  • MDN Web Bluetooth API: https://developer.mozilla.org/en-US/docs/Web/API/Web_Bluetooth_API
  • Web Bluetooth Specification: https://webbluetoothcg.github.io/web-bluetooth/
  • Chrome Platform Status: https://chromestatus.com/feature/5264933985976320
See also
CONNECTIVITY
WUTOOLS