flutter_image_conversion 2.1.2

A lightweight Flutter plugin that enables conversion of HEIC images to JPEG format on iOS, macOS, and Web. Supports Windows and Android with graceful fallback. Ideal for apps targeting image uploads, [...]

2.1.2

Patch Release: Fix Web Bytes Conversion Bug

Bug Fixes

• 🐛 Fixed convertHeicToJpegBytes() on Web platform
  • Corrected FileReader.result type handling (ByteBuffer → Uint8List)
  • Added MIME type to Blob constructor for better heic2any compatibility
  • Fixed HEIC file detection using proper ISO-BMFF ftyp box parsing
  • Improved error handling with FileReader.onLoadEnd

Example App

• ✨ Added test button for convertHeicToJpegBytes() method
  • Displays converted bytes size and hex preview
  • Helps verify Web platform functionality

Technical Details

• Fixed bug where reader.result as List<int> failed (should be ByteBuffer)
• Changed Blob creation from Blob([bytes]) to Blob(<Object>[bytes], 'image/heic')
• Replaced broken magic bytes check with proper ISO Base Media File Format parsing
• Now checks ftyp box at correct offset (4) and validates HEIF brand codes

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2.1.1

Patch Release: Fix pub.dev Deployment

Changes

• 🔧 Fixed GitHub Actions workflow for pub.dev deployment
  • Added OIDC authentication setup
  • Updated tag pattern for more specific matching
  • Improved workflow configuration

Notes

• No code changes - deployment infrastructure update only
• Same functionality as v2.1.0

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2.1.0

New Feature: Uint8List-Based Conversion Method

New Features

• ✅ convertHeicToJpegBytes(): New method for direct Uint8List conversion
  • Accepts Uint8List input instead of File
  • Returns Uint8List output instead of File
  • Improved Web platform support (avoids File/blob URL handling issues)
  • Available on iOS, macOS, and Web platforms
  • Android and Windows return original bytes unchanged

Improvements

• Better support for in-memory image processing workflows
• Reduced file I/O overhead for Web platform
• Cleaner API for applications that work with byte arrays

Backward Compatibility

• ✅ Existing convertHeicToJpeg(File) method unchanged
• ✅ All existing code continues to work without modifications
• ✅ No breaking changes

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2.0.0

Major Update: Multi-Platform Support

New Features

• ✅ macOS Support: Full HEIC to JPEG conversion using NSImage
  • Resize to max 1080px width (maintains aspect ratio)
  • JPEG compression quality 0.7
  • Output to temp directory
• ✅ Web Support: HEIC to JPEG conversion using heic2any JavaScript library
  • Browser-based conversion via WASM
  • Returns blob URL for converted images
  • Graceful fallback on conversion failure
• ✅ Windows Support: Stub implementation with graceful fallback
  • Logs warning message
  • Returns original file unchanged

Platform Support Matrix

Platform	Status	Conversion
iOS	✅ Full Support	HEIC → JPEG
macOS	✅ Full Support	HEIC → JPEG
Web	✅ Full Support	HEIC → JPEG
Android	⚠️ Stub	Returns original
Windows	⚠️ Stub	Returns original

Test Coverage

• Added comprehensive unit tests for web platform (8 new tests)
• Updated integration tests for all platforms
• All 11 tests passing

Breaking Changes

• None (backward compatible)

Dependencies

• Updated SDK constraint to ^3.8.1 (Dart 3.8.1)
• Updated Flutter constraint to >=3.32.0
• Updated plugin_platform_interface to ^2.1.8
• Updated flutter_lints to ^5.0.0
• Added flutter_web_plugins dependency

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1.0.0

Initial Release

• Initial release of flutter_image_conversion.
• Supports converting HEIC images to JPEG on iOS using native Swift code.
• Provides image resizing and adjustable compression quality before conversion.
• Designed for use in social media apps, web uploads, and other cross-platform image workflows.
• Android platform is stubbed with log output indicating that HEIC is not supported.