Enlarging text depends on the book format and device type.
On Android and iOS devices:
- ePUB formatted ebooks: Once you open the book, navigate to the Settings tab and select the “+” button at the upper right corner until the desired text size is attained. After that select “Save” at the top of the screen and you will be redirected to the Reading view of the book with the new settings displayed.
- PDF formatted ebooks: Since PDF is a fixed layout format the best way to enlarge the text is to use the pinch zoom technique as there are no settings that would allow for actual change the text size of a PDF formatted e-book.
For Windows devices, you can open the book and select View > Zoom to see your options.