Emily I feared you would say that. I think "ad absurbiam" there must be a point though, when an image is reduced to, say, 1 by 1 pixels - how can the author prove it ;o) What about 2 pixels by 2 pixels? 4 pixels by 4 pixels? In UK law we have the concept of "a reasonable man". That is, I expect it would become attributable at the point when " a reasonable man" would recognise "beyond reasonable doubt" that the thumbnail was indeed a copy. In music there are precedents: no one can claim copyright over a sequence of just two notes [in a musical score], but you can't plagiarise a phrase and get away with it. OTOH, in a sample (recording) of a piece of music copying even 1 note can be abuse - but that is another thing. > So have fun, and keep a database of the URLs of every image you have on hand. keeping the database makes it unworkable: a rendition of my cat (Fingal) required 1500 images!!!! It's a great poster but ... maybe not something I could publish :o) WTF: I'll risk it :o) warning - 350Kb image: set for Windows Wallpaper size (1024x768) http://myweb.tiscali.co.uk/photoforum/fingal_1024x768.jpg Copyright of the original image is owned by me. Copyright of the Mosaic treatment and Image Tiles set is owned by Andrea Denzler Permission for personal use granted by both of us. :o) Tiles in original are 84x64 pixels (from Andrea's collection) Full size image 3528x2646 pixels Bob PS - Statement from Andrea: "If you want to use the mosaic in one of your collections (to sell) feel free to do it, I would appreciate a link to my freeware" http://andreaplanet.com/andreamosaic