flutter_sticker_maker 0.1.5

Flutter plugin to create stickers from images using iOS Vision/CoreImage and Android MLKit.

Flutter Sticker Maker

A cross-platform Flutter plugin to create stickers by removing backgrounds from images using iOS Vision/CoreImage and ONNX.

Features

• iOS 17.0: Uses Vision and CoreImage with enhanced quality settings and edge smoothing
• Android and iOS below 17.0: Uses ONNX models for background removal
• Configurable border support with customizable color and width
• Simple Dart API

Quality Enhancements

• Image preprocessing: Automatic contrast and brightness enhancement
• Edge smoothing: Advanced algorithms to create natural-looking edges
• Noise reduction: Built-in filtering for cleaner results
• High-resolution support: Maintains image quality for large stickers

Usage

alternatively, you can initialize the plugin with the following code:

FlutterStickerMaker.initialize();

and dispose it when done:

FlutterStickerMaker.dispose();

make a sticker from an image:

import 'package:flutter_sticker_maker/flutter_sticker_maker.dart';

// Basic usage
final sticker = await FlutterStickerMaker.makeSticker(imageBytes);

// With border customization
final stickerWithBorder = await FlutterStickerMaker.makeSticker(
  imageBytes,
  addBorder: true,
  borderColor: '#FF0000', // Red border
  borderWidth: 15.0,      // 15 pixel border width
);

Parameters

• imageBytes: The input image as Uint8List (PNG/JPEG)
• addBorder: Whether to add a border around the sticker (default: true)
• borderColor: Hex color string for the border (default: '#FFFFFF')
• borderWidth: Width of the border in pixels (default: 12.0)

Examples

Demo App Screenshots

[example]

See example/ for a full demo app.

Setup

• iOS: Minimum iOS 15.5
• Android: Minimum SDK 21

Permissions

Add to AndroidManifest.xml:

<uses-permission android:name="android.permission.READ_MEDIA_IMAGES" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" android:maxSdkVersion="32"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="28"/>
<uses-permission android:name="android.permission.CAMERA" />

Add to ios/Runner/Info.plist:

<key>NSPhotoLibraryUsageDescription</key>
<string>This app needs access to your photo library to pick images and save stickers.</string>
<key>NSCameraUsageDescription</key>
<string>This app needs camera access to take pictures for sticker creation.</string>
<key>NSPhotoLibraryAddUsageDescription</key>
<string>This app saves stickers to your photo library.</string>

Thanks

image_background_remover