How do I open an EPUB file stored in Google Drive™?
Install EPUB Reader once from Google Workspace™ Marketplace, and from then on it waits in the menu. Right click the file, choose Open with, and pick EPUB Reader. Drive hands over that one book and it opens in a new tab. You do not download it first and you do not convert it to anything.
Can Google Drive™ read EPUB books on its own?
Drive stores the file and shows you its name, but there is no reader behind it: chapters, themes and your reading place are what this app adds. That is the whole gap it fills.
Which files in my Drive can it see?
Only the ones you hand it through Open with. The permission it asks for covers files you opened with this app and nothing else, so the rest of your Drive stays invisible to it.
Does my book get uploaded anywhere?
No. The book travels from Google to your own browser and stops there, in local storage on this machine. We collect nothing and there is nothing to log in to.
Does it work offline?
Once a book has landed, yes. Open the reader on a plane and your library is there, exactly where you left it. Fetching a new book from Drive is the one thing that needs a connection.
What about MOBI, FB2 or Word files?
EPUB is what this app registers in Google Drive™. Drop a file onto the shelf yourself and the same reader also opens Kindle style MOBI and AZW3 books, FB2 plain or zipped, and plain text, Markdown or Word documents. PDF and comics are not supported.
Is it free?
Yes. No ads, no chapters behind a payment, no trial that runs out. It works the same on Windows, Mac and ChromeOS.