B-format is a specific book size commonly used for paperback editions. It typically measures 5.06 x 7.81 inches, making it a popular choice for novels and general fiction. This format allows for a comfortable reading experience while being compact enough for easy handling and storage. The B-format is often favored by publishers because it strikes a balance between readability and cost-effectiveness. It is widely used in the publishing industry, especially for titles aimed at mass-market audiences. Many authors and publishers choose this format to maximize their book's appeal and accessibility.