How to Create E-Book Files for IngramSpark

Below, you will find the most basic instructions on how to create the two files you need to successfully publish your e-book through IngramSpark:

  1. An EPUB file for your book’s interior
  2. A high-res JPG image for your cover. This image will be used for display on retail partner’s websites.

At any time during the e-book publishing process, if you have any questions concerning EPUB conversions or file creation, do not hesitate to contact one of our friendly IngramSpark Customer Service peeps.


Each of our e‐book retail and library partners have unique file requirements. A valid EPUB, created with our outlined specifications, enables us to satisfy the requirements of each partner, getting your e‐book where it belongs—on every device.

The majority of e‐retailers will not sell PDF files in their e‐book stores. The EPUB format is the official standard of the IDPF (International Digital Publishing Forum) and is designed for reflowable content, meaning an EPUB reader can optimize text for a particular display device.

E-Book File Creation

Important Specs:

COVER (High-res JPG)

  • File must contain front cover only. Full spread print book jackets that include spine and back cover will be rejected.
  • Format: Must be a JPG file
  • Size:
    • 2560 pixels on longest side
    • Minimum 1600 pixels on shortest side (350 dpi)
  • Color: All front covers must be RGB.
  • The content of the cover image must not infringe another publisher’s or artist’s copyright on the same cover.


  • Size:  100MB or less. Please note, while IngramSpark and retail sites can accept 100MB files, the IDPF Validator cannot check files over 10MB due to the amount of time it would take.
  • Format:  EPUB 3.0 required. We cannot accept enhanced EPUB 3 files at this time.
  • No single image inside an EPUB can be greater than 3.2 million pixels. (Total pixels = length in pixels X width in pixels).
  • Include an internal cover image. This should be formatted the same size of, and as part of your interior. (For use within the book content.)
  • Be sure the metadata entered in IngramSpark matches the information on your cover. For example, if the cover art and the book asset are for a book titled Paradiso, but the metadata is for Purgatorio, then the items do not match.
  • There should not be any reference to page numbers in the book. This includes the Table of Contents. Your e‐book will never look just like your print book. E‐readers are limited in the way they display content and your book will appear different from device to device.

For more information

  • Visit Digital Book World for a good QED checklist of e‐book best practices.
  • Visit IngramSpark Blog for interior content tips to help avoid file rejection.

A Note on Using a Third-Party EPUB Provider

We highly encourage you to verify that the files created by a third-party will be suitable for a production or manufacturing environment and not for personal use only.

One way to tell if your file is valid before uploading to IngramSpark is by running your file through . Be aware, this tool only accepts files up to 10 MB. Also note there are e‐retailer specific requirements IDPF does not check. For instance, images are required to have no more than 3.2 million pixels, which is built into the IngramSpark quality check, but not addressed by IDPF. Therefore, it may be possible to pass IDPF validation, but still get rejected by IngramSpark.