Perler Bead Pattern Maker

Fuse beads (Perler, Hama, Artkal) and similar pixel blocks such as 디폼블럭 are placed on a pegboard one colour at a time, so a pattern is really a grid chart with a colour for every peg. This maker shrinks your picture to the number of beads you want across, matches every square to a bead colour, and gives you a chart with board lines, a bead count for each colour and a PDF printed at real bead size. Everything runs in your browser; the picture is not uploaded.

How to use this tool

1. Choose a picture. Logos, cartoons and pixel art work better than detailed photos.
2. Set the width in beads. 29 fills one large square pegboard; wider patterns span several boards.
3. Pick the bead colours: the basic set, the best colours from the picture, or your own list of hex codes.
4. Download the PNG chart or the PDF, and buy beads using the counts in the colour key.

Formula

height in beads = round(picture height × width in beads ÷ picture width); each bead = the palette colour with the smallest CIELAB distance to the average colour of its block

The picture is averaged in blocks (transparent areas are left empty if they are less than half opaque). Matching uses the CIE L*a*b* colour space, which follows how people see colour differences better than plain RGB. Floyd–Steinberg dithering passes each bead's colour error to the beads to the right and below (7/16, 3/16, 5/16, 1/16). The PDF draws every bead at the chosen pitch.

Example

A 1600 × 1000 px picture at 29 beads wide becomes round(1000 × 29 ÷ 1600) = 29 × 18 beads = 522 beads, which fits on one 29-peg board. At 5 mm per bead the finished piece is 14.5 × 9 cm. At 58 beads wide it needs 58 × 36 = 2,088 beads on 2 × 2 boards.