| V | Select / move annotations |
| H | Highlighter (drag over text) |
| U / S | Underline / Strike out |
| Q | Squiggly underline |
| P | Freehand pen |
| L / A | Line / Arrow |
| R / O | Rectangle / Ellipse |
| X | Laser pointer (fades away) |
| T | Text box |
| N | Sticky note |
| M | Stamps (β β ? β APPROVEDβ¦) |
| E | Eraser (click an annotation) |
| Ctrl+Z | Undo (deep history) |
| Ctrl+Y | Redo |
| Ctrl+S | Save annotations (.json) |
| Ctrl+E | Export flattened PDF |
| Ctrl+F | Fit width |
| Del | Delete selected annotation |
| Space+drag | Pan the canvas |
| + / β | Zoom in / out |
| 1β9 | Jump to colour swatch |
| Esc | Close popover / deselect |
Save .json to keep annotations editable, then Load them later against the same PDF.
Export PDF flattens everything onto a real, downloadable PDF.
A proper markup studio in your browser β highlighters, pens, laser, stamps, sticky notes and a full undo history. Nothing is uploaded anywhere.