esc_pos_printer

The library allows to print receipts using an ESC/POS thermal WiFi/Bluetooth printer.

WiFi printing can be used in Flutter or pure Dart projects. For Flutter projects, both Android and iOS are supported.

Bluetooth printing can also be used on both Android and iOS platforms.

To discover existing printers in your subnet, consider using ping_discover_network package. Note that most of the ESC/POS printers by default listen on port 9100.

Here is a printers tested with this library. Please add your models you have tested to maintain and improve this library and to choose the right printer.

Main Features

Connect to Wi-Fi / Bluetooth printers
Simple text printing using text method
Tables printing using row method
Text styling:
- size, align, bold, reverse, underline, different fonts, turn 90°
Print images
Print barcodes
- UPC-A, UPC-E, JAN13 (EAN13), JAN8 (EAN8), CODE39, ITF (Interleaved 2 of 5), CODABAR (NW-7)
Paper cut (partial, full)
Beeping (with different duration)
Paper feed, reverse feed

Note: Your printer may not support some of the presented features (especially for underline styles, partial/full paper cutting, reverse feed, ...).

Getting started (Generate a ticket)

Ticket testTicket() {
  final Ticket ticket = Ticket(PaperSize.mm80);

  ticket.text(
      'Regular: aA bB cC dD eE fF gG hH iI jJ kK lL mM nN oO pP qQ rR sS tT uU vV wW xX yY zZ');
  ticket.text('Special 1: àÀ èÈ éÉ ûÛ üÜ çÇ ôÔ',
      styles: PosStyles(codeTable: PosCodeTable.westEur));
  ticket.text('Special 2: blåbærgrød',
      styles: PosStyles(codeTable: PosCodeTable.westEur));

  ticket.text('Bold text', styles: PosStyles(bold: true));
  ticket.text('Reverse text', styles: PosStyles(reverse: true));
  ticket.text('Underlined text',
      styles: PosStyles(underline: true), linesAfter: 1);
  ticket.text('Align left', styles: PosStyles(align: PosTextAlign.left));
  ticket.text('Align center', styles: PosStyles(align: PosTextAlign.center));
  ticket.text('Align right',
      styles: PosStyles(align: PosTextAlign.right), linesAfter: 1);

  ticket.text('Text size 200%',
      styles: PosStyles(
        height: PosTextSize.size2,
        width: PosTextSize.size2,
      ));

  ticket.feed(2);
  ticket.cut();
  return ticket;
}

Print table row:

ticket.row([
    PosColumn(
      text: 'col3',
      width: 3,
      styles: PosStyles(align: PosTextAlign.center, underline: true),
    ),
    PosColumn(
      text: 'col6',
      width: 6,
      styles: PosStyles(align: PosTextAlign.center, underline: true),
    ),
    PosColumn(
      text: 'col3',
      width: 3,
      styles: PosStyles(align: PosTextAlign.center, underline: true),
    ),
  ]);

Print image:

import 'dart:io';
import 'package:image/image.dart';

const String filename = './logo.png';
final Image image = decodeImage(File(filename).readAsBytesSync());
// Using (ESC *) command
ticket.image(image);
// Using an alternative obsolette (GS v 0) command
ticket.imageRaster(image);

Print barcode:

final List<int> barData = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 4];
ticket.barcode(Barcode.upcA(barData));

Getting Started (WiFi printer)

import 'package:esc_pos_printer/esc_pos_printer.dart';

final PrinterNetworkManager printerManager = PrinterNetworkManager();
printerManager.selectPrinter('192.168.0.123', port: 9100);
final PosPrintResult res = await printerManager.printTicket(testTicket());

print('Print result: ${res.msg}');

For more details, check example/example.dart and example/discover_printers.

Getting Started (Bluetooth printer)

PrinterBluetoothManager printerManager = PrinterBluetoothManager();

printerManager.scanResults.listen((printers) async {
  // store found printers
});
printerManager.startScan(Duration(seconds: 4));

// ...

printerManager.selectPrinter(printer);
final PosPrintResult res = await printerManager.printTicket(testTicket());

print('Print result: ${res.msg}');

For more details, check demo project example/blue.

TODO

Print QR codes
USB printers support

Test print

Support

If this package was helpful, a cup of coffee would be highly appreciated :)

FightForFreedom-LK/esc_pos_printer