Brick Mosaic Maker for LEGO Pieces (Unofficial)

A brick mosaic turns a photo into a flat picture made of 1 × 1 plates or tiles pressed onto a baseplate — a popular project for portraits, pets and logos. This maker shrinks your picture to the number of studs you want, matches every stud to a common solid brick colour, and gives you a realistic preview, a parts list with counts per colour and numbered 16 × 16 build-guide sheets. It is an independent tool that runs in your browser and is not affiliated with the LEGO Group.

How to use this tool

1. Choose a picture with a clear subject; faces and pets work best when cropped close.
2. Pick the mosaic size in studs and whether to crop the picture or keep it whole.
3. Choose the brick colours, optionally limit how many, and turn on dithering for shaded photos.
4. Download the preview and the build-guide sections, and order the parts from the list.

Formula

each stud = the brick colour with the smallest CIELAB distance to the average colour of its block of the picture

The picture is cropped to the mosaic's proportions around its centre and averaged in equal blocks. Distances are measured in the CIE L*a*b* colour space, which follows human colour perception better than RGB. With a colour limit, the most used colours are kept and every stud is matched again. A stud is 8 mm wide, which gives the finished size.

Example

A 48 × 48 mosaic needs 48 × 48 = 2,304 pieces and measures 48 × 0.8 = 38.4 cm square. It splits into 3 × 3 = 9 build-guide sections of 16 × 16 studs. A 64 × 64 mosaic needs 4,096 pieces on four 32 × 32 baseplates.