Crop And Lock
Crop any part of any window into a small floating thumbnail that updates live. Perfect for keeping an eye on a chart, a video, terminal output, or a chat — without giving up screen real estate to a whole window.
Requirements
- macOS 13 Ventura or later.
- Screen Recording permission — so ProToys can capture the live picture of the window.
To grant it: open System Settings → Privacy & Security → Screen Recording and tick ProToys.
How to Use
- Press ⌘⌃⇧T.
- A window picker appears. Select the app window you want to crop.
- A crop selection overlay appears over that window. Click and drag to define the region you want to monitor.
- Release the mouse. A floating thumbnail panel appears showing that region updating live.
- Position and resize the thumbnail panel wherever is convenient on your screen.
Tip
You can have several crop thumbnails open at once. Press the hotkey again to start another one — from the same window or a different one.
Closing a Thumbnail
Click the close button on the thumbnail, just like any other window. The live capture for that crop stops automatically.
Keyboard Shortcuts
| Action | Shortcut |
|---|---|
| Create new crop thumbnail | ⌘⌃⇧T |