flutter_receipt_scanner 0.2.0

On-device receipt capture (camera + gallery) with crop, EXIF, auto-rotate, and Korean/English OCR quality gating.

flutter_receipt_scanner

On-device receipt image acquisition, crop, orientation normalization, JPEG compression, EXIF extraction, and OCR (raw string) for Flutter, on iOS and Android.

This is a federated plugin. The native layers own image primitives only — receipt domain parsing (store name, amount, date), upload transport, cloud OCR, and duplicate detection belong in the consuming app, not here.

• iOS: VisionKit document scanner + PHPicker → Vision OCR.
• Android: GMS document scanner + system photo picker → ML Kit OCR.

Usage

import 'package:flutter_receipt_scanner/flutter_receipt_scanner.dart';

final result = await scan(options: const ScanReceiptOptions(maxPages: 1));
switch (result.status) {
  case ScanStatus.success:
    for (final image in result.images) {
      print('${image.fileName}: ${image.ocrQuality?.textLength ?? 0} OCR chars');
    }
  case ScanStatus.cancelled:
    // The user dismissed the scanner.
  case ScanStatus.rejected:
    // Every capture fell below the OCR floor; see result.rejectedImages.
}

The output file:// JPEG URIs are stable until the next scan() call and do not survive app restarts (the OS clears the cache directory).

Host app permissions

• iOS Info.plist: NSCameraUsageDescription (camera scan). No photo-library key is needed — the gallery flow uses the permissionless PHPickerViewController.
• Android: none — the GMS document scanner and the system photo picker run out-of-process and require no app-declared permission.

Platform baselines

• iOS deployment target: 16.0.
• Android minSdk: 24.

See the repository for the full documentation and design specs.