Peek extends macOS Quick Look to support file types it doesn’t handle natively — including Markdown, plain text with syntax highlighting, archives (zip/tar), strings files, .env files, and more. Install it and Quick Look just works for those types. No interface to learn.
Peek
Quick Look extensions for more file types
Peek Cheatsheet
Supported Types
Markdown (.md), plain text with syntax highlighting, shell scripts, .env files, JSON, YAML, TOML, archive contents (zip, tar, gz), and several more depending on version.
No Configuration
Peek works entirely as a Quick Look plugin — there is no app to open or configure. It activates automatically when you press Space on a supported file type.
Troubleshooting
If Quick Look stops working for a type, run qlmanage -r in Terminal to reset the Quick Look daemon and re-register all plugins.
Peek Shortcuts
Quick Look
| Shortcut | Action |
|---|---|
| Space | Open Quick Look for selected file |
| Space again / Escape | Close Quick Look |
| ← / → | Navigate between files |
| ⌘↓ / Return | Open file in default app |