Book Types · July 13, 2026

Ebook & epub: the book type with no binding at all

Custom Book Studio — an e-reader displaying a book page with a red progress bar (watermarked).

This is the fifth and final entry in our book types series — one binding at a time, what it is, how it is made, and what we would print with it. We have covered every way to hold pages together — staples, coil and wire, glue, thread and boards. This last one holds nothing together, because there is no paper: the ebook.

What an ebook really is

An ebook in the epub format — the standard behind Apple Books, Kobo and, in a close cousin, Kindle — is not a picture of a page. It is reflowable text: the words rearrange themselves to fit whatever screen and type size the reader chooses. Bump the font up and the lines re-wrap; turn a phone sideways and the text follows. There is no fixed “page,” so there is no binding to speak of.

Diagram: the same ebook text reflowing to fit a phone, a tablet and an e-reader

That single file is the entire book, and it behaves the same on a 6-inch e-reader as on a 13-inch tablet. One export, every screen.

What it does well

An ebook has no inventory and infinite copies. Nothing is printed, stored or shipped, so a book can reach a wide audience the day it is finished, anywhere in the world, at almost no marginal cost. It is searchable — readers can find a phrase instantly — and it is the most accessible format we produce: reflowable text drives adjustable type, high-contrast modes and screen readers, so a book works for readers a fixed page cannot serve.

The honest trade-offs

  • You give up the object. No paper, no cover in the hand, no shelf presence — the things that make a printed book a gift or a keepsake are exactly what an ebook trades away.
  • Layout control is looser. Because text reflows, you cannot pin an image to an exact spot the way you can on a printed page. Heavily designed layouts — children’s books, cookbooks, art books — need a fixed-layout epub or are simply better in print.
  • It is a companion, not a rival. Most projects are strongest as a printed edition and an ebook, not one instead of the other.

What we would make an ebook for

Novels and non-fiction with a wide release, accessibility-first editions, supplementary digital versions sold alongside a print run, review and advance copies, and anything text-first that benefits from search and instant distribution. We build the epub from the same typeset files as your printed book, so the two editions stay in step.

Design and typesetting still matter

A good epub is not a Word file renamed. It needs a proper reading order, structured headings, alt text on images and clean styling so it holds together across readers — the same design and typesetting discipline that goes into the print edition. Start a book in the AI Book Designer or start your book, and ask us about pairing a print run with an ebook.

That closes our first pass through the book types — coil and wire, saddle stitch, perfect-bound softcover, sewn hardcover, and the ebook. Still deciding which one your project wants? Tell us what you are making and we will match it to a binding.

← Back to the blog