EPUB vs. PDF: Which Format Does Your Book Need?

Understanding the difference between EPUB and PDF—and why your book may need one, both, or even a fixed-layout Kindle edition.

The Short Answer

Most books benefit from both a PDF and an EPUB.

PDF is used for print.

EPUB is the industry standard for most ebooks.

Kindle Create can also convert a print-ready PDF into a fixed-layout Kindle book when preserving your design is more important than allowing text to reflow. The right choice depends on the type of book you’re publishing.

EPUB: The Standard for Most Ebooks

EPUB is a reflowable format. Readers can adjust font size, font style, line spacing, margins, and even background color. The text automatically adapts to phones, tablets, e-readers, and computers.

Best for:

• Novels • Memoirs • Nonfiction • Business books • Most books with straightforward layouts

Key Considerations

Text automatically reflows to fit different screen sizes.

Readers control the reading experience.

Images, tables, and sidebars require careful formatting.

Complex page designs cannot be preserved exactly.

EPUB is accepted by most ebook retailers, including Amazon KDP, Apple Books, Kobo, Barnes & Noble Press, and Google Play Books.

PDF: The Standard for Print

A PDF is a fixed-layout document. Every page appears exactly as it was designed, making it the preferred format for professional printing.

Best for:

• Paperback books • Hardcover books • Workbooks • Photography books • Children’s books • Cookbooks

Key Considerations

Exact page positioning is preserved.

Include proper bleed (typically 0.125”)

Embed all fonts.

Use high-resolution images (300 DPI minimum).

Use the correct color space for your printer. Your print PDF becomes the master version of your book.

Kindle Create: A Third Option for Fixed-Layout Kindle Books

If your book relies heavily on visual design, Kindle Create offers another publishing option. Rather than converting your book into a traditional reflowable EPUB, Kindle Create can import your print-ready PDF and generate a fixed-layout Kindle book that closely matches your printed edition. This approach works especially well for books where maintaining the original page design is essential.

Best for:

• Children’s picture books • Cookbooks • Art books • Photography books • Graphic novels • Comics • Highly designed educational materials

Benefits

• Preserves the appearance of your printed pages. • Faster than rebuilding a complex layout as a fixed-layout EPUB. • Ideal for books with illustrations, text overlays, and custom typography. • Readers see nearly the same design as the printed version.

Things to Keep in Mind

Readers cannot resize or reflow the text.

File sizes are generally larger.

The reading experience is more like viewing a digital version of the printed book than reading a traditional ebook.

Best suited for Kindle devices and apps that support fixed-layout content. For many illustrated books, Kindle Create provides an excellent balance between maintaining design quality and simplifying ebook production.

Fixed-Layout EPUB

Another option is a fixed-layout EPUB, which preserves each page’s design while remaining in the EPUB format. Unlike a standard EPUB, readers cannot reflow the text because every page is locked into place.

Best for:

• Children’s books • Cookbooks • Graphic novels • Interactive educational books • Highly visual publications While fixed-layout EPUB works well on platforms like Apple Books, support varies between retailers and devices, making it more specialized than a standard reflowable EPUB.

Which Should You Create First?

Begin with your print-ready PDF. A professionally designed print layout becomes the foundation for every other version of your book.

From that master file, you can produce:

A reflowable EPUB for most ebook retailers.

A fixed-layout Kindle book using Kindle Create.

A fixed-layout EPUB if your distribution platform supports it. Starting with the print design minimizes revisions and keeps every edition consistent.

Final Tip

Before publishing, always validate your EPUB with EPUBCheck to ensure it meets industry standards. If you’re creating a fixed-layout Kindle book, preview it in Kindle Previewer before uploading to Amazon KDP to confirm that every page displays correctly across supported Kindle devices and apps. Whether you’re publishing a simple novel or a richly illustrated children’s book, choosing the right digital format helps ensure your readers enjoy the best possible experience while preserving the quality of your work.