RePub is a file format that is used by Google Newsstand Producer, an online platform that allows publishers to prepare content for the Google Play Newsstand app. The format is based on EPUB v2, and was adapted from Barnes & Noble's Digital Replica Plus format. RePub supports two reading modes:
1. Replica View - replicates the original (print) magazine layout using full-screen images for each page.
2. Text View - a reflowable representation of the text and images of an article.
A Replica page can refer to one or more text articles. Replica pages and text articles are linked through a
replicaMap.xml resource. This allows users of the Newsstand app to navigate from a replica page to the corresponding text articles. Apart from the Replica Map and the page images, a RePub file is a regular EPUB that should pass validation in EpubCheck.
A specification exists, but Google has not made it publicly available.