Quick Look Plugins – A macOS Preview Enhancement Suite for Developers

Application Overview

Quick Look Plugins is a carefully curated collection of macOS plugins designed to enhance the system’s native “Quick Look” functionality. Maintained by GitHub user sindresorhus, this project aggregates multiple practical preview plugins, particularly tailored for developers, designers, and power users.

Key Features

🎯 Core Advantages

• Function Extension: Adds support for various special file formats to macOS’s built-in Quick Look.
• Seamless Integration: All plugins are fully integrated into the system-level preview function, ensuring a consistent user experience.
• Open Source & Free: Most plugins are open source and free (a few premium plugins require purchase).
• Developer-Friendly: Optimized for developers’ daily workflows.

🔧 Core Plugin Overview

1. QLStephen

• Function: Preview plain text files without extensions or with unknown extensions.
• Use Cases: Viewing README, CHANGELOG, configuration files, etc.
• Installation: brew install qlstephen

2. QLMarkdown

• Function: Preview Markdown files with formatted rendering.
• Features: Supports syntax highlighting; WYSIWYG experience.
• Installation: brew install --cask qlmarkdown

3. QuickLookJSON

• Function: Preview JSON files with formatted display.
• Features: Syntax highlighting, collapsible/expandable structure.
• Installation: brew install quicklook-json

4. BetterZipQL

• Function: Preview contents of compressed archives.
• Supported Formats: ZIP, RAR, 7z, TAR, and other common compression formats.
• Note: This is now part of the BetterZip application. Install via brew install betterzip.

5. Suspicious Package

• Function: Preview contents of macOS installer packages (.pkg).
• Security Feature: Enables easy inspection of package contents for safety verification.
• Installation: brew install suspicious-package

6. Apparency

• Function: Directly preview contents of macOS application bundles (.app).
• Use Case: Useful for developers debugging application packaging.
• Installation: brew install apparency

7. QLVideo

• Function: Preview thumbnails, covers, and metadata of video files.
• Supported Formats: MP4, MOV, AVI, MKV, and other mainstream video formats.
• Installation: brew install qlvideo

8. ProvisionQL

• Function: Preview configuration profiles for iOS/macOS applications.
• Target Users: Mobile developers.
• Installation: brew install provisionql

💰 Premium Plugins

Peek (Discontinued but still usable)

• Function: Enhanced text preview with copy, jump-to-line, GitHub-style Markdown rendering, etc.
• Supported Types: Over 300 file extensions.
• Purchase: Available on Mac App Store.

Folder Preview

• Function: Preview folders and compressed files with a Finder-like interface.
• Features: Intuitive folder content preview.
• Purchase: Available on Mac App Store.

🚀 Installation Guide

Homebrew Installation (Recommended)

# Install individual plugins, e.g.:
brew install qlstephen
brew install --cask qlmarkdown

Manual Installation

1. Download the .qlgenerator file from each plugin’s release page.
2. Move the file to ~/Library/QuickLook.
3. Run qlmanage -r to refresh the Quick Look plugin cache.

macOS Catalina and Later Notes

To ensure plugins work properly, remove quarantine attributes if needed:

# Check attributes
xattr -r ~/Library/QuickLook

# Remove quarantine attributes
xattr -d -r com.apple.quarantine ~/Library/QuickLook

💡 Usage Tips

• Quick Preview: Select a file and press the Space key.
• Batch Preview: Select multiple files and press Space to preview them.
• Navigation: Use arrow keys to switch between multiple file previews.

📊 Technical Advantages

1. Performance Optimization: All plugins are lightweight and have minimal impact on system performance.
2. Compatibility: Perfectly compatible with macOS native Quick Look.
3. Continuous Updates: Community-maintained with timely bug fixes and new features.
4. Flexible Selection: Install only the plugins you need—no requirement to use the entire suite.

🎉 Target Users

• Developers: Preview code files, configuration files, logs, etc.
• Designers: Quickly preview design assets, images, videos, etc.
• System Administrators: Inspect configuration files, installer packages, system files.
• General Users: Improve file management efficiency by quickly previewing various file types.

Stars: 18.5k | Forks: 539 | License: MIT

This is a meticulously selected and tested collection of plugins that significantly enhances the file preview experience on macOS. For professional users who frequently handle diverse file formats, these tools have become essential components of their daily workflows.