MarkerOn

Open source / Tauri v2 / ~1.5 MB

MarkerOn

A keyboard-first screen annotation tool for demos, teaching, meetings, and recordings. Draw over any app, then switch to click-through mode while your marks stay visible.

Download Latest Microsoft Store
  • 8 drawing tools
  • Click-through mode
  • Whiteboard mode
  • Win / macOS / Linux
Instant

Press CtrlShiftD and start drawing over any app.

Unintrusive

Runs in the tray — no account, telemetry, or cloud dependency.

Precise

Shortcuts, angle snapping, custom widths, undo/redo — no menus required.

Built for live explanation

Keep the screen moving while your marks stay put.

Click-through mode

Toggle from the toolbar or with CtrlShiftX. Annotations stay visible while clicks, scrolls, and typing reach the app underneath.

Keyboard-first tools

Number keys switch tools. Ctrl+scroll adjusts width. Q/E cycle colors. Copy and clear without opening menus.

Whiteboard when needed

Press W for a clean board, keep content between sessions, and copy as an image for docs or chats.

Product surface

Annotation tools

MarkerOn annotation tools

Pen, highlighter, arrow, shapes, eraser, text, and colors.

Product surface

Settings panel

MarkerOn settings panel

Toolbar, whiteboard, drag modes, shortcuts, and startup.

Live demo

Click-through mode

Click-through demo: draw on screen, press X, then select text in the app below while annotations remain visible

Draw, press X, then keep working underneath.

  • Enter CtrlShiftD
  • Toolbar Space
  • Through X
  • Board W

Get started

Download MarkerOn or read the FAQ.

Official installers and quick answers when comparing screen annotation tools.

Common questions

Is MarkerOn a ZoomIt alternative?

Keyboard-first annotation and click-through drawing. Use Magnifier if you need zoom.

Epic Pen-style click-through?

Marks stay visible while you click, scroll, and type in apps below.

Account or cloud upload?

No. Local-first, open source, and account-free.