Inspect services, characteristics and values exposed by a nearby BLE device.
Choose services before opening the browser device picker. The browser hides services that were not requested.
The log stays in this tab and is not uploaded.
No activity yet.
Bluetooth LE Explorer is an online tool for inspecting the GATT data that a nearby Bluetooth Low Energy device makes available to the browser. After you select a device and grant permission, the page displays its services, characteristics and descriptors. Read values are shown as hexadecimal bytes, UTF-8 text and unsigned decimal bytes.
The explorer includes presets for battery, device information, fitness, health and environmental sensors, as well as Nordic UART. You can also enter a custom 16-bit, 32-bit or 128-bit service UUID. This makes the tool useful for checking sensors, development boards, prototypes and BLE accessories without installing a desktop application.
Values are not read automatically. Every write requires confirmation because sending data can change the state of the connected device.
Web Bluetooth requires HTTPS, a compatible Chromium-based browser and explicit permission through the browser’s device chooser. The page can access only the device selected by the user and the services requested before connection.
The browser does not expose the device’s MAC address or a complete list of system-paired devices. The displayed device ID is a browser-specific identifier, not a MAC address. Security-sensitive GATT attributes, including the Human Interface Device service, can be blocked by the browser. Device data and the activity log remain in the current tab and are not uploaded by the explorer.