Two mosaics, one engine
Hex mosaic lays pointy-top hexagons whose width is the tile size. Crystallize scatters one seed per grid square at a random position and gives every pixel to its nearest seed — the Voronoi pattern behind the frosted-glass effect in photo editors. In both, each tile is the average colour of the pixels inside it.
Change the tile seed with “New pattern” to get a different crystal layout.
Posters, thumbnails and backgrounds
A large mosaic turns a photo into an abstract background that still carries its colours; a medium one makes an eye-catching thumbnail. Export PNG for flat colour, or JPG to keep files small.
Questions
What is the difference between hex mosaic and crystallize?
Hex mosaic uses a regular honeycomb of equal tiles. Crystallize uses irregular cells around randomly placed seeds, so tiles vary in shape and size.
Is this a photo mosaic made of many small photos?
No. This is a tile effect on one photo. Each tile is filled with the average colour of the part of the photo it covers.
Can I apply the mosaic to just one area?
Yes. Switch off “Whole picture” and draw a region with any tool.
Why does the crystal pattern change?
“New pattern” picks fresh random seed positions. The pattern stays fixed while you edit until you press it.