Yes, completely free with no account required, no ads, and no limits on how many mosaics you generate!

A stud is the small circular bump on top of a LEGO brick. It is also the standard unit of measurement used in LEGO building. One stud equals 8mm (0.8cm) in real life.

When you set your mosaic to 48×48 studs, for example, your finished build will measure approximately 38.4cm × 38.4cm.

Upload any image in JPG or PNG format, set your desired width and height in studs, choose how many colours you want to limit the palette to, then click Generate Mosaic.

The tool analyses each pixel of your image, maps it to the closest available LEGO colour, and renders a stud-by-stud mosaic preview with a numbered colour map and a full colour list.

Any resolution works! The tool automatically scales your image down to the stud grid you set. For best results, use a clear image with good contrast and distinct colours.

Simple graphics, portraits with plain backgrounds, and logos tend to produce better mosaics than busy, highly detailed scenes.

The tool uses the current active LEGO colour palette as of 2025–2026, sourced from BrickLink's colour guide.

Only solid, opaque colours are included. Transparent, metallic, and pearl colours have been excluded since they are rarely used in mosaic builds and are harder to source in large quantities.

For a clean, buildable mosaic, 10 to 16 colours is a good starting point. Using too many colours makes the build harder to follow and more expensive to order. Using too few can make the image unrecognisable.

The tool lets you set between 2 and 30 colours, experiment to find the right balance for your image.

Yes. After the mosaic generates, a Swap or Remove Colours panel appears below it. Each colour in your palette shows three closest alternative colours you can switch to with one click.

You can also remove a colour entirely, the tool will reassign those pixels to the next closest available colour and regenerate the mosaic instantly.

You might want to remove a colour that is hard to find, discontinued in your country, too expensive, or simply not available in your current brick collection.

Removing it forces the tool to use your remaining colours, giving you a mosaic you can actually build with what you have or can easily order.

The tool supports up to 96×96 studs. At 1 stud = 8mm, a 96×96 mosaic would measure approximately 76.8cm × 76.8cm — a very large wall display piece. For a first build, 32×32 or 48×48 is a manageable starting size.

Each colour in your mosaic is assigned a unique number. The number map shows your entire mosaic as a grid of numbers, where each cell's background colour matches the LEGO colour it represents.

This is your building guide, you follow it row by row, placing the correct coloured stud at each position.

Yes, there are three export options.

Export Mosaic PNG saves a high-resolution image of your rendered mosaic with stud dots.

Export Numbered PNG saves the full number map as a PNG file you can print and use as a building guide.

Export Colour List CSV downloads a spreadsheet with each colour name, HEX code, stud count, and percentage, useful for ordering bricks on BrickLink or other suppliers.