Inputs
Everything runs locally in your browser.
Select individual local images that will become the mosaic tiles.
Useful for Amazon Photos downloads or exported albums. Non-image files are ignored.
Choose one local image. For Amazon Photos, download the destination photo first, then load it here.
Google Photos
Use the official Google Photos Picker API to add source images or pick the destination photo.
This browser app needs a Google OAuth web client whose authorized JavaScript origin matches this app URL.
Exports at 1600 px on the long edge. Load a destination image to preview the exact size.
Preview
The rendered mosaic scales to fit while preserving export resolution.
Mosaic Output
Waiting for renderSource Library
Each source image is assigned an average color used for tile matching.