What is an ePIB?

The ePIB format is Barnes & Noble's proprietary format, supported by Nook Color. It is a revised version of EPUB that readers can make use of for better interactivity–reading aloud passages, magnifying text, etc.

It is referenced in multiple ONIX code lists, such as:

Example:

ONIX Code Lists Issue 36, January 2017
List 10: Epublication type code

Value

Description

Notes

Value

Description

Notes

045

ePIB

Proprietary format based on EPUB used by Barnes and Noble for fixed-format e-books, readable on NOOK devices and Nook reader software

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