ePub to PDF converter extension uses online-covert.com API to convert your ePub documents to the well-known PDF format. This extension can be used to share ePub files with friends. Since PDF is a very popular format, you can be sure they are able to open the file that you have shared. Notes: 1. This extension uses the online-covert.com's free API to do the conversions. Make sure to read the privacy policy here, https://www.online-convert.com/privacy 2. The conversion occurs on the server-side, so you need to be connected to the internet before doing your conversions.