What size photos should we upload? Should I shoot in RAW?

What size photos should we upload? Should I shoot in RAW?

The App will be best served using JPGs up to 5MB. From our experience, that is a good size for customers to share and print up to 16x20". No need to shoot RAW, unless you want to convert prior to upload. At Glossy Finish we shoot only JPG and keep our file sizes under 5MB and we are golden.