How to make ebook app which support epub format?

Is it possible to make ebook reader app which support book in epub files.Is there any component for epub viewer like pdf viewer,…i have made a ebook apps with support only pdf but i like to implement epub files…how to make this possible ?

The way i would do it, is by converting the epub file to pdf, here’s an api example
API: epub to pdf - CloudConvert.

to connect the api take a look here