Amazon’s Kindle Direct Publishing (KDP) platform offers authors the flexibility to publish their books in three primary formats: eBook, paperback, and hardcover. Each format caters to different reader preferences and provides various customization options to suit the author’s vision.
eBooks are digital versions of books designed for compatibility with Kindle devices and apps. They support features such as adjustable font sizes, embedded images, hyperlinks, and interactive content, enhancing the reader’s experience. eBooks are ideal for reaching a global audience quickly and cost-effectively, as they eliminate the need for physical printing and distribution.
Paperbacks are physical books produced through KDP’s print-on-demand service, which prints copies as orders are received, reducing the need for inventory management. Authors can choose from a variety of trim sizes to best present their content. Some of the available trim sizes include:
- 5″ x 8″ (12.7 x 20.32 cm)
- 5.25″ x 8″ (13.34 x 20.32 cm)
- 5.5″ x 8.5″ (13.97 x 21.59 cm)
- 6″ x 9″ (15.24 x 22.86 cm) — the most common size for U.S. trade paperbacks.
- 7″ x 10″ (17.78 x 25.4 cm)
- 8″ x 10″ (20.32 x 25.4 cm)
- 8.5″ x 11″ (21.59 x 27.94 cm)
These sizes accommodate various genres and reader expectations. For instance, a 6″ x 9″ trim size is standard for novels and general nonfiction, while an 8.5″ x 11″ size is often used for workbooks and textbooks. Authors can also select between matte and glossy finishes for the cover and choose cream or white paper for the interior, depending on the desired aesthetic and genre conventions.
Hardcovers provide a durable and premium option for readers who prefer a more substantial book. KDP offers hardcover books with case laminate covers, where the cover art is printed directly onto the hardcover binding. Available trim sizes for hardcovers include:
- 5.5″ x 8.5″ (13.97 x 21.59 cm)
- 6″ x 9″ (15.24 x 22.86 cm)
- 7″ x 10″ (17.78 x 25.4 cm)
- 8.25″ x 11″ (20.96 x 27.94 cm)
- 8.5″ x 11″ (21.59 x 27.94 cm)
These options are suitable for a range of publications, from fiction and nonfiction to children’s books and academic texts. It’s important to note that hardcover books are printed as case laminate without dust jackets, and the only color ink option available is premium color.
When selecting a trim size, authors should consider factors such as genre standards, printing costs, and reader preferences. KDP provides templates and guidelines to assist authors in formatting their manuscripts to match the chosen trim size, ensuring a professional appearance and a positive reader experience.
By offering multiple formats and a variety of trim sizes, KDP enables authors to tailor their publications to meet diverse reader expectations and market demands, enhancing the book’s accessibility and appeal.