Collage.com recommends using the standard RGB color model.

While we suggest using photos that are at least 300 DPI for all products, if that's not possible, matching the DPI of the product allows the picture to maintain the same size on that product ...

We offer 3 different phone case styles to showcase your photos and to meet your everyday needs. Everyday Case- Protection without all the extra bulk Product Description Dual layer...

Puzzle Piece Sizes Adult pieces are about 1 inch Children pieces are about 2 inches Puzzle Piece Thickness   Children’s puzzle pieces are 0.11 inches or 2.794 millimeters thick  Adult p...