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@thermal-label/brother-ql-web

v0.6.1

Published

WebUSB browser driver for Brother QL label printers

Vulnerabilities

Powered byPowered by Snyk
  • 0High
  • 0Medium
  • 0Low

Links

Git

Maintainers

bankersmanbankersman

Keywords

brotherbrother-qllabel-printerthermal-labelwebusbbrowser

Readme

@thermal-label/brother-ql-web

WebUSB browser driver for Brother QL label printers.

Browser Support

| Browser | Support | | ------------- | ------- | | Chrome / Edge | ✅ | | Firefox | ❌ | | Safari | ❌ |

Requires a secure context (https:// or localhost).

Install

pnpm add @thermal-label/brother-ql-web

Quick Start

import { requestPrinter, findMedia } from '@thermal-label/brother-ql-web';

const media = findMedia(259)!; // 62mm continuous
const printer = await requestPrinter();
await printer.printText('Hello WebUSB', media);

Two-Color Printing

Requires a QL-800, QL-810W, or QL-820NWB with DK-22251 labels.

const blackCanvas = document.getElementById('black-layer') as HTMLCanvasElement;
const redCanvas = document.getElementById('red-layer') as HTMLCanvasElement;
const blackCtx = blackCanvas.getContext('2d')!;
const redCtx = redCanvas.getContext('2d')!;

await printer.printTwoColor(
  blackCtx.getImageData(0, 0, blackCanvas.width, blackCanvas.height),
  redCtx.getImageData(0, 0, redCanvas.width, redCanvas.height),
  media,
);

API

requestPrinter(options?)

Opens the browser's USB device picker filtered to all known Brother QL PIDs. Returns a WebBrotherQLPrinter.

fromUSBDevice(device)

Wraps an already-obtained USBDevice. The caller is responsible for opening and claiming the interface.

WebBrotherQLPrinter

| Method | Description | | -------------------------------------------- | ---------------------------------------- | | print(pages, options?) | Send a pre-encoded job | | printText(text, media, options?) | Render and print a text label | | printImage(imageData, media, options?) | Print from ImageData | | printImageURL(url, media, options?) | Fetch URL and print | | printTwoColor(black, red, media, options?) | Two-color label (QL-800 series) | | getStatus() | Query printer status | | isConnected() | Returns true if the USB device is open | | disconnect() | Release interface and close device |

Requirements

  • Chromium-based browser (Chrome 61+, Edge 79+)
  • Secure context (https:// or localhost)
  • User gesture required to call requestPrinter()

Supported hardware

24 devices — 3 verified · 0 partial · 15 expected · 0 unsupported · 6 unverified

| Model | Key | USB PID | Transports | Status | | ---------------------------------------------------------------------------- | ------------ | ------- | ---------------- | ------------- | | PT-E550W | PT_E550W | 0x2060 | USB, TCP | ⏳ unverified | | PT-P750W | PT_P750W | 0x2062 | USB, TCP | ⏳ unverified | | PT-P900 | PT_P900 | 0x2083 | USB | ⏳ unverified | | PT-P900W | PT_P900W | 0x2085 | USB, TCP | ⏳ unverified | | PT-P910BT | PT_P910BT | 0x20c7 | USB, BT SPP | ⏳ unverified | | PT-P950NW | PT_P950NW | 0x2086 | USB, TCP | ⏳ unverified | | QL-500 | QL_500 | 0x2013 | USB | 🔄 expected | | QL-550 | QL_550 | 0x2016 | USB | 🔄 expected | | QL-560 | QL_560 | 0x2018 | USB | 🔄 expected | | QL-570 | QL_570 | 0x2019 | USB | 🔄 expected | | QL-580N | QL_580N | 0x201b | USB, TCP | 🔄 expected | | QL-600 | QL_600 | 0x2100 | USB | 🔄 expected | | QL-650TD | QL_650TD | 0x201c | USB | 🔄 expected | | QL-700 | QL_700 | 0x2042 | USB | ✅ verified | | QL-710W | QL_710W | 0x2044 | USB, TCP | 🔄 expected | | QL-720NW | QL_720NW | 0x2045 | USB, TCP | 🔄 expected | | QL-800 | QL_800 | 0x209b | USB | ✅ verified | | QL-810W | QL_810W | 0x209c | USB, TCP | 🔄 expected | | QL-820NWBc | QL_820NWBc | 0x209d | USB, TCP, BT SPP | ✅ verified | | QL-1050 | QL_1050 | 0x2027 | USB | 🔄 expected | | QL-1060N | QL_1060N | 0x2028 | USB, TCP | 🔄 expected | | QL-1100 | QL_1100 | 0x20a7 | USB | 🔄 expected | | QL-1110NWB | QL_1110NWB | 0x20a8 | USB, TCP | 🔄 expected | | QL-1115NWB | QL_1115NWB | 0x20ab | USB, TCP | 🔄 expected |

Click any model to open its detail page on the docs site, where engines, supported media, and verification reports live. The same data backs the interactive cross-driver table.

License

MIT © Mannes Brak