There isn't one answer to this question since people's scrapbooking needs vary drastically. It would largely depend on the intended purpose of the pages and your available budget. However, the two most popular formats for scrapbooking are 12”x12” and 8.5”x11″. So, if you're unsure about what size to choose, those would be good places to start. Opting for a square format will be the most hassle-free approach. For instance, the 12”x12” layout provides more space to work with. That said, there are no hard-and-fast rules when it comes to scrapbooking, so feel free to experiment until you find a format that works best for you.