Beware that it may take a long time to process!
This works by uploading the file to this server for processing. When done you will be presented with a link to the mosaic. All images can be fetched by anyone who knows the link, so please don't upload sensitive images.
All images are deleted periodically, so download any results you want to keep immediately.
A photomosaic (or photographic mosaic) is a picture made up of many individual sub-pictures.
Read more at Wikipedia.
It may look like this:
More examples
I need images to use to create all the tiles that the image is made up of. Therefore I use a library of
images to pick tiles from. If images of the right colors are missing, I substitute with made up tiles instead.
If too many tiles are missing the result will look odd. If that happens to you, I don't have any suggestion other
than to pick a different source image that may yield a better result.
At the time of writing this, the tile library is fairly limited, and consists of public domain images from various sources, e.g. Nasa, Smithsonian, complemented by some of my own images.
Missing tiles may look like this: