Unfold

Product Introduction

1. Definition: Unfold is a native macOS Quick Look extension (category: productivity/utility software) that enables instant previews of folders, archives, source code files, ebooks, and 60+ specialized formats directly within Finder.
2. Core Value Proposition: It eliminates manual file extraction and app-switching by delivering zero-latency previews with syntax highlighting and metadata inspection, prioritizing privacy and offline functionality for macOS power users.

Main Features

1. Archive Previews Without Extraction:
   • How it works: Unfold mounts compressed files (.zip, .rar, .7z, etc.) as virtual directories using macOS kernel-level APIs. It renders nested file structures and extracts metadata (e.g., archive size, compression ratio) without writing temporary files to disk.
   • Technologies: Utilizes libarchive for format support and Apple’s QuickLook framework for native integration.
2. Syntax-Highlighted Code Previews:
   • How it works: Parses 20+ programming languages (Python, JavaScript, C++, etc.) using tree-sitter grammars, applying theme-aware highlighting. Renders line numbers and retains indentation in Quick Look’s constrained preview pane.
   • Technologies: Leverages macOS’s TextKit for typography and on-device language detection.
3. Folder Content Summarization:
   • How it works: Scans folder hierarchies in real-time, displaying file counts, dominant formats, and largest files via a collapsible tree view. Supports recursive previews up to 10 directory levels deep.
   • Technologies: Apple File System (APFS) metadata queries and GCD for background threading.

Problems Solved

1. Pain Point: Eliminates wasted time extracting archives or opening dedicated apps (e.g., IDEs, archive utilities) for basic file inspection. Solves "preview blindness" with unsupported formats in native macOS Quick Look.
2. Target Audience:
   • Developers inspecting code/config files during filesystem navigation.
   • Data analysts auditing compressed datasets.
   • Technical writers managing markdown/ebook libraries.
3. Use Cases:
   • Verifying archive contents before sharing.
   • Rapidly skimming source code during cross-repository searches.
   • Validating configuration files (.env, .yaml) without IDE overhead.

Unique Advantages

1. Differentiation: Unlike BetterZip or Archiver, Unfold operates entirely within Finder via macOS-native APIs—no standalone app launches or persistent background processes. Outperforms free Quick Look plugins (e.g., QLStephen) with broader format support and folder previews.
2. Key Innovation: Implements a "just-in-time" decompression engine that streams archive data on-demand, reducing memory footprint by 70% compared to traditional extractors. Privacy-centric design ensures file content never leaves the device.

Frequently Asked Questions (FAQ)

1. Does Unfold support previewing .epub ebooks in macOS Quick Look?
   Yes, Unfold renders .epub files with formatted text and cover art in Quick Look, including metadata like author and chapter count—no third-party ebook software required.
2. Can I use Unfold to preview folders containing thousands of files?
   Unfold optimizes large-folder previews by sampling file metadata asynchronously, displaying partial summaries instantly while loading deeper hierarchies in the background.
3. Is Unfold compatible with macOS Sonoma and Apple Silicon?
   Unfold requires macOS 14+ (Sonoma/Ventura) and runs natively on both Intel and Apple Silicon (M1/M2/M3) architectures via universal binary.
4. How does Unfold handle licensing for multiple Macs?
   A single $7 license activates Unfold on up to 3 devices via device-specific hashes managed through Flew.gg’s license portal.
5. Does Unfold work offline for confidential enterprise environments?
   All preview processing occurs locally; internet access is only required for initial trial activation or license validation. File content is never transmitted externally.