HEIC to JPEG Converter

A native macOS app for batch converting HEIC images to JPEG — fast, private, and free.

  

Features

• Drag & drop — drop files or entire folders, conversion starts automatically
• Batch conversion — processes multiple images concurrently
• JPEG quality control — slider to balance file size and image quality
• Custom save location — choose any output folder
• Completion notifications — get notified when a batch finishes
• 100% offline — no internet connection, no cloud upload, no tracking
• App Sandbox — sandboxed with user-selected file access only

Download

Grab the latest .dmg from the Releases page.

Note: The app is ad-hoc signed (no Apple Developer account). On first launch macOS Gatekeeper will block it. To open it:

1. Right-click HEICConverter.app → Open → Open again in the dialog

Or via Terminal:

sudo xattr -rd com.apple.quarantine "/Applications/HEICConverter.app"

Building from Source

Requirements

• macOS 15.0 (Sequoia) or later
• Xcode 26+

Architecture

HEICConverter/
├── Models/
│   ├── ConversionError.swift
│   ├── ConversionItem.swift
│   ├── ConversionResult.swift
│   └── ConversionSettings.swift
├── Services/
│   ├── FileSystemService.swift        # actor — file I/O
│   ├── ImageConversionService.swift   # struct — HEIC → JPEG conversion
│   └── NotificationService.swift      # user notifications
├── ViewModels/
│   ├── ConversionViewModel.swift
│   └── SettingsViewModel.swift
├── Views/
│   ├── HomeView.swift
│   ├── DropZoneView.swift
│   ├── ConversionListView.swift
│   ├── ConversionItemRow.swift
│   ├── FooterView.swift
│   └── Settings/
└── Util/
    ├── GlassStyle.swift
    └── Extensions/

• Swift 6 / SwiftUI — 100% SwiftUI interface
• MVVM — ConversionViewModel and SettingsViewModel drive the UI
• Swift Concurrency — structured task groups for parallel conversion
• Actor isolation — FileSystemService actor; project-wide @MainActor default isolation via SWIFT_DEFAULT_ACTOR_ISOLATION

License

MIT

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Built by Anton Paliakou