Expo Barcode Generator

This is a React Native component that generates barcodes using the JSBarcode library and renders them using the react-native-svg package. The component supports both Expo Web, IOS and Android .

Expo Compatibility

💡 For Expo SDK 51, use version 3

💡 For Expo SDK 50, use version 2

💡 For Expo SDK 49 and under, use version 1

Installation

NPM:

npm i expo-barcode-generator

YARN:

yarn add expo-barcode-generator

Usage

import React from 'react';
import { View } from 'react-native';
import { Barcode } from 'expo-barcode-generator';

export default function App() {
  return (
    <View style={{ flex: 1, justifyContent: 'center', alignItems: 'center' }}>
      <Barcode
        value="123456789999"
        options={{ format: 'UPC', background: 'lightblue' }}
        rotation={-5}
      />
    </View>
  );
}

Options

The options object allows you to customize the appearance and behavior of the barcode. The available options are as follows:

| Option | Description | Default Value | | ------------ | --------------------------------------------------------------------------------------------- | ------------- | | value | The value to be encoded into the barcode. (required) | - | | width | The width of each barcode unit. | 2 | | height | The height of the barcode. | 100 | | displayValue | A boolean indicating whether to display the value as text below the barcode. | true | | fontOptions | The font options for the displayed text. | 'bold' | | text | The text to be displayed below the barcode. | '' | | textAlign | The alignment of the displayed text. Possible values: 'left', 'center', 'right'. | 'center' | | textPosition | The position of the displayed text relative to the barcode. Possible values: 'top', 'bottom'. | 'bottom' | | textMargin | The margin between the barcode and the displayed text. | 2 | | fontSize | The font size of the displayed text. | 20 | | background | The background color of the barcode. | '#ffffff' | | lineColor | The color of the barcode lines. | '#000000' | | marginTop | The top margin of the barcode. | 10 | | marginBottom | The bottom margin of the barcode. | 10 | | marginLeft | The left margin of the barcode. | 10 | | marginRight | The right margin of the barcode. | 10 | | rotation | The rotation angle of the barcode in degrees. | - |

Supported Barcodes

The following barcodes are supported by this library:

• CODE128
• CODE128 (automatic mode switching)
• CODE128 A/B/C (force mode)
• EAN
• EAN-13
• EAN-8
• EAN-5
• EAN-2
• UPC (A)
• UPC (E)
• CODE39
• ITF
• ITF-14
• MSI
• MSI10
• MSI11
• MSI1010
• MSI1110
• Pharmacode
• Codabar