PDFsun.com allows you to convert epub files to rb quickly, easily and entirely online. Upload your files to our platform, let our epub to rb converter do its magic and download your newly created document right away. No more hassle, convert epub to editable rb in just a few steps. Learn how to convert epub to rb with PDFsun.com by following the steps above.

How to convert EPUB to RB

Step 1

Upload epub-file(s)

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

Step 2

Choose "to rb"

Choose rb or any other format you need as a result (more than 200 formats supported)

Step 3

Download your rb

Let the file convert and you can download your rb file right afterwards

File extension .EPUB
Description Is a format developed by the International Digital Publishing Forum. It is characterized by the XML- and XHTM-based optional use of CSS styling. The main feature of this format is the use of reflowable text (word wrap) which makes it possible to adapt the image to different device displays. The ePub file is a zip-archive with an .epub extension.
File extension .RB
Description Was developed for the first mass-produced e-book reader – Rocket eBook. The format is written in Ruby. RB files are containers holding the entire content for a Rocket eBook device. It has DRM protection capability which is not used in the books published at present due to the format’s lack of popularity.

Why Convert EPUB to RB?

The main benefit of converting epub to Rocket eBook is the ability to edit the text directly within the file. This is especially helpful if you want to make significant changes to your epub, as most people are comfortable and familiar with Rocket eBook. If you're wondering how to change epub to rb for free, it's important to note that quality of the resulting rb is also important, not just the cost. While there are several free epub to rb converters, the majority do not sufficiently maintain the original formatting and spacing of the file. Our conversion tool delivers a result that looks like your original epub file.


We created our epub to rb free converter tool so you no longer need to waste time retyping files in rb. Within seconds you can change your epub to a rb and make the necessary edits. Not only is our epub to rb converter free, online and available whenever you need it, we allow users to convert 2 additional files per month for free too. So go ahead and convert epub to rb online for free. We think you will be happy with the results !

EPUB Convert to