Make a photo mosaic online — free & private
Turn any photo into a colorful tile mosaic with adjustable density and tile size. Runs entirely in your browser.
- No upload
- Sign in to download
- Free
What is photo mosaic generator?
A photo mosaic recreates an image as a grid of colored tiles. This tool downsamples your source image to a grid and matches each cell to the nearest tile from a built-in library by average color — all computed client-side.
Adjust the grid density (number of tiles across), the output tile size, and how aggressively it avoids repeating the same tile.
How to photo mosaic generator
- Drop or click to choose an image.
- Adjust grid density, tile size, and duplicate tolerance.
- Compare the original against the mosaic and download.
Frequently asked questions
How does tile matching work?
Each grid cell's average color is matched to the nearest tile color in the built-in library using a nearest-neighbor lookup.
Can I use my own tile images?
Not in this version — the tile library is built in. Custom tile libraries are a planned paid feature.
Is my image uploaded?
No. The mosaic is generated locally in your browser.
Get the Free Photo Toolkit
Every image spec, size, and preset for Amazon, Etsy, Instagram, and passport photos -- one printable PDF.