Highlights
- Pen, highlighter, area, and eraser tools with a smooth canvas engine
- Multi-tab workflow, undo/redo, and optional auto-copy to clipboard
- Deep customization via theme.json plus remappable shortcuts
Feature tour
Drawing tools
- Pen: freehand strokes with smooth anti-aliasing
- Highlighter: flat caps and translucent ink
- Area rectangles and rounded rectangles for emphasis
- Eraser: stroke- or object-based cleanup
Canvas & productivity
- Zoom & pan (Ctrl+scroll, drag gestures) plus fit/center framing
- Ruler overlay (Ctrl+R) with scroll-wheel rotation
- Blend modes Normal / Multiply for area tools
- Multi-tab images with per-document undo/redo histories
Keyboard shortcuts
These match the README defaults. Ursa Markup includes a full shortcut editor so you can remap everything.
| Ctrl+O | Open image |
|---|---|
| Ctrl+S | Save image |
| Ctrl+C | Copy to clipboard |
| Ctrl+V | Open image from clipboard |
| Ctrl+Z | Undo |
| Ctrl+Shift+Z | Redo |
| Ctrl+R | Toggle ruler |
| 1-3 / E | Switch drawing tools |