A booklet can be in multiple formats and sizes. However, a typical booklet is styled as a stack of 2 or more sheets of letter-size paper that is folded in half. The booklets are basically small books containing approximately 4 to 48 pages. Although, the number of pages may vary as per users' requirements. And, a standard booklet is usually of portrait 5.5 in x 8.5 in. or landscape 8.5 in x 5.5 in. size.