printer_label

Make printer label easy.

Features

Print labels via LAN (Wi-Fi)
Support barcode, image, and thermal printing
Cross-platform Flutter support

Platform Support

iOS

Wi-Fi printing only

Android

Wi-Fi / USB (depends on printer)

Required permissions:

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

import 'package:printer_label/printer_label.dart';

🔧 Core Printing API Printer Connection /// Check printer connection (Android only) final connected = await PrinterLabel.checkConnect();

/// Connect to LAN printer await PrinterLabel.connectLan( ipAddress: '192.168.1.100', );

Print Label (Images) await PrinterLabel.printLabel( barcodeImageModel: labelModel, );

Print Image await PrinterLabel.printPrintImage( model: imageModel, );

Print Barcode await PrinterLabel.printBarcode( printBarcodeModel: barcodeModel, );

Print Thermal (ESC/POS) await PrinterLabel.printThermal( printThermalModel: thermalModel, );

🧾 Description

PrinterLabel is the core API for interacting with label printers.

Provides low-level access to:

Printer connection

LAN printing

Barcode printing

Image & thermal printing

All higher-level services are built on top of this API.

⚠️ Notes

checkConnect() is currently supported on Android only.

LAN printing requires the printer and device to be on the same network.

Most users should use:

LabelPrintService

CupStickerPrinter

Use PrinterLabel directly only when:

You need full control

You are implementing custom print logic

package:printer_label/service/label_printer_service.dart.

await LabelPrintService.instance.printLabels

LabelPrintService provides a high-level API for printing labels from data collections.

Uses Flutter widgets to build each label layout.

Automatically:

Renders widgets to images

Duplicates labels based on quantity

Aligns labels according to LabelPerRow

Cup Sticker Printing

Support printing cup stickers / drink labels from images or Flutter widgets.

Print Sticker from Images

Use this method when you already have sticker images (PNG/JPG) in bytes format.

CupStickerPrinter.printSticker( imageBytesList: images, size: CupStickerSize.medium, );

CupStickerPrinter is a utility class for printing cup stickers / drink labels.

Supports:

Printing from raw image bytes

Printing from Flutter widgets

Automatically:

Resizes images to match sticker size

Aligns labels correctly for thermal printers

Designed for single-label-per-row sticker printers.

Use Cases

Milk tea cup labels

Coffee shop stickers

Order number & customer name labels

POS / kitchen printing

Print a sample thermal label image using the built-in ESC/POS service.

await ESCPrintService.instance.printExample();

Description

ESCPrintService is a singleton service used to handle thermal printing.

printExample() prints a demo label image bundled inside the package.

The example image is loaded from Flutter assets and sent directly to the thermal printer.

This is useful for:

Testing printer connectivity

Demo purposes

Verifying printer alignment and image quality

printer_label

Features

Platform Support

iOS

Android

Screenshot

Result printer

Libraries

printer_label package