BleWebler is a lightweight, browser-based label printing tool that connects to Bluetooth Low Energy (BLE) thermal printers – no drivers, no apps, no vendor lock-in. It runs entirely in Chromium-based browsers and communicates directly with supported devices using the Web Bluetooth API.

Try it: https://josb25.github.io/BleWebler/

Features

• Bluetooth LE connection via Web Bluetooth API
• Direct printing to compatible label printers
• Runs entirely in the browser: No installation required
• Modular structure: Ready to support more printer models
• Open source and privacy-friendly: Nothing is sent to any server

Use Cases

• Creating labels on mobile or desktop without proprietary apps
• Replacing stock label printer apps with a cleaner, open alternative

Requirements

• A Chromium-based browser (e.g. Chrome, Edge)
• A supported BLE-compatible label printer
• A user-initiated connection (via button click, due to Web Bluetooth restrictions)

Future Plans

• Support for more printer models and brands
• Label preview
• Ability to import bitmaps
• Print QR- and Barcodes

Licensed under the GPLv3 License.