Draw, sketch and take notes on a multi-page whiteboard with real pens, shapes and text.
Even ink with a slight taper — the default for writing.
The board is a vector scene, not a picture. Every mark is kept as its own object — a stroke is a list of points, a rectangle is four numbers. That is what makes undo, selecting and moving a mark, resizing the board without blurring, and true SVG export possible. A canvas is only used to draw it.
Strokes are simplified on release. A pointer emits a sample every few milliseconds, so one flowing line arrives as hundreds of nearly-straight points. The Ramer–Douglas–Peucker algorithm drops the ones that sit within 0.7px of their neighbours — usually 60–80% of them, with no visible change. This board currently holds 0 points across 0 strokes.
Autosave is local. The board is written to this browser’s storage a moment after each change and restored when you return. It never leaves your device, and it is per-browser — it will not appear on your phone.
Sharing packs the whole scene into the link itself, compressed. At 174 B this board fits, so the Share button will produce a working URL and QR code.
Which export to use. SVG keeps everything as vectors and stays sharp at any size — best for printing or further editing. PNG is a flat image at the resolution you choose; 2× or higher is worth it for anything printed. PDF writes every page in one file. Board file is the only format that round-trips — import it back and you can keep editing.
Everything happens in this tab. Nothing is uploaded, including when you export.
