annotate

Native macOS screen annotation tool. Captures your screen on activation, lets you draw on the frozen background with a floating toolbar.

A lightweight, zero-dependency alternative to Presentify.

Features

• Pen, eraser, text, and pointer tools
• 6 colors, adjustable line width
• Grid overlay (NxM) and binary tree overlay
• Multi-monitor support (one overlay per screen)
• Undo/redo with full history
• Global hotkey activation

Requirements

• macOS 13+
• Screen Recording permission (prompted on first use)

Install

make install   # builds and copies to ~/Applications

Direct swiftc build with macOS SDK. No Xcode or SPM required.

Usage

Press Ctrl+Shift+D to toggle annotation mode. Your screen freezes and a toolbar appears.

Keyboard Shortcuts

Key	Action
Ctrl+Shift+D	Toggle annotation mode
P / E / T / M	Pen / Eraser / Text / Pointer
1-6	Colors (red, blue, green, yellow, white, black)
[ / ]	Decrease / increase line width
G	Add grid overlay
B	Add binary tree overlay
C	Clear all
Backspace	Delete selected item
Cmd+Z / Cmd+Shift+Z	Undo / Redo
ESC	Cancel placement mode

License

MIT