Picture mosaic

Silly me can’t remember where I saw the link to the site that makes the cool photo mosaics that seem to be popping up everywhere on Flickr and Ravelry these days. Can anyone help this silly girl out? TIA! :muah:

There’s a new version of Picasa that does it.

Don’t know if that’s what you’re looking for, but my husband is all gung-ho for it!