Web Bluetooth BLE Tester
DISCONNECTEDDevice
Pick a BLE (GATT) device, then read, write, and subscribe to its characteristics. Chrome / Edge over HTTPS or localhost.
Optional services (must list a service UUID here to access it)
Ready. Press Connect to pick a device.
Send custom command
Characteristic (writable)
Write mode
Cmd/Ctrl+Enter to send
Log (0)
No activity yet
Web Bluetooth talks to BLE (GATT) devices only — classic Bluetooth and audio devices are not accessible. To access a service you must list its UUID in “Optional services” (or a filter) before connecting.