How to use it

Panels (the default) shows your forearm as four upright faces side by side: inner, top, outer and back. Each one is a straight-on strip a quarter of the way round, at true size, with the elbow at the top. The dashed lines mark the face itself and the grey edges show part of the next face, so a design crossing from one face to the next stays visible. This is the quick way to stack elements down the arm.

Unfolded is the whole arm opened flat in one piece. Both orange edges are the same cut down the inner arm.

Both modes are the same skin. Whatever you place in Panels also shows in Unfolded (as a locked layer) and on the 3D arm, and the other way round.

The 3D arm on the right updates a moment after each change. Drag to turn it, scroll or pinch to zoom, and use the buttons to jump to a side.

Pieces on the left are ready stencils (skull halo, swallow, key, hummingbird, sword, star). Click one and it lands in the roomiest free (red) spot on the forearm you can see, sized to fit, never above the elbow; then drag, scale and rotate it. Halos round both skulls places a halo on each skull. The Text buttons add spaced serif lettering; double-click any text to edit it.

Add designs with Add image, by dragging files onto the canvas, or by pasting. With "white → see-through" on, white paper disappears and only the lines stay, like a stencil.

Move around: scroll or two-finger drag to pan, pinch or Cmd+scroll to zoom, or hold Space and drag.

Keys: V select · H pan · P pen · L line · O circle · E ellipse · R box · D dot · T text · Delete removes · Cmd+D duplicates · arrows nudge 1 mm (Shift = 1 cm) · Cmd+Z undo.

Everything saves in this browser automatically. Use Save file to keep a copy or move it to another device.