LUT Preview Studio

LUT Preview Studio is a high-performance macOS utility designed for photographers and cinematographers to quickly visualize, compare, and organize 3D LUTs (.cube) across multiple images.

Features

• High-Performance Rendering: Utilizes a custom, zero-allocation parser and CIColorCube for fast LUT applications.
• Smart Multi-Folder Support: Drag and drop multiple folders or images simultaneously to build your library.
• Intelligent Caching: Uses SHA256 hashing via CryptoKit to cache thumbnails and processed images, ensuring instant app startup without re-rendering.
• Advanced Comparison Modes:
  • Sliced View: Compare original and LUT-applied versions using an interactive slider.
  • Dynamic Grid: Compare multiple favorite LUTs in a perfectly balanced grid that adapts to your window size.
• Session Persistence: Automatically remembers your last used folders, images, and selections using Security-Scoped Bookmarks.
• Professional Export:
  • High-quality JPEG export with adjustable compression.
  • Interactive HTML gallery export for sharing previews with clients.
• Built-in Search: Instantly find specific LUTs by name using Cmd + F.

Installation

1. Clone the Repository:

   git clone [https://github.com/leoxnard/LUTPreviewStudio.git](https://github.com/leoxnard/LUTPreviewStudio.git)

2. Open in Xcode: Open LUTPreviewStudio.xcodeproj.
3. Signing & Capabilities: Select your Team and ensure Hardened Runtime and User Selected Files (Read/Write) are enabled in the Signing & Capabilities tab.
4. Build & Run: Press Cmd + R.

Usage

1. Setup: Drag images and folders containing .cube files into the setup screen.
2. Gallery: Browse generated thumbnails. Use the sidebar to filter by folder or view favorites.
3. Comparison:
   • Press Spacebar to toggle a LUT as a favorite.
   • Click Compare Favorites to view your selected LUTs side-by-side or in a sliced layout.
4. Export: Press Cmd + S to export the current high-resolution preview as a JPEG.

Settings

Accessible via Cmd + ,:

• Default Intensity: Set the global strength for LUT application.
• Export Quality: Adjust JPEG compression levels.
• Data Management: Clear the render cache to free up disk space.

Requirements

• macOS: 13.0 or later.
• Xcode: 14.0 or later.
• Swift: 5.7 or later.

License

This project is licensed under the MIT License - see the LICENSE file for details.