I have produced an illustrated history book that was created with 300dpi images for print publication. My next step is to create a fixed-layout epub. Is there a particular resolution that I should set for the images? Is there a single resolution that I can use to target all tablets and e-readers that accept fixed-layout epubs?
My strategy was going to be to generate a PDF of the book (with no text) and import the PDF pages as the background images for the fixed-layout epub. I am guessing that I should use 150 dpi when saving the PDF.
I'm just a little worried that if I create the fixed-layout epub with 150 dpi images, it may not show up correctly on tablets that don't have high resolution screens?