Custom paint-by-numbers kits made from your own photo usually mean ordering online and waiting for a canvas in the mail. This tool builds the pattern in seconds, right in your browser, and lets you rebuild it as often as you like — try a different number of colors, size or level of detail until it looks right.
It picks a palette of 12, 24 or 36 colors, splits the picture into areas, merges the ones too small to paint, traces clean outlines and places each number in the roomiest spot of its area. Sizes are 30 × 40 cm (about 12 × 16 in), 40 × 50 cm (about 16 × 20 in), A4 and A3, and the numbers are sized to stay readable on that canvas.
For portraits and pets there's an optional AI prep step. It repaints the photo as clean patches of flat color while keeping the eyes, facial features and likeness, so the pattern comes out with far fewer ragged little areas on skin and fur. The prep is the only paid part, charged once per photo; everything else is free.
The PDF opens with a preview and tips, then the color key: a swatch for every number, how much of the picture it covers and a hint for mixing it from eight basic acrylics. Next comes the outline at full size for a print shop, and the same outline split into Letter/A4 sheets with a 1 cm overlap and alignment marks for printing at home. The outline is also available as an SVG.