You are not locked in. An Epub file can be read on:
A high-resolution PDF might be 50MB. The same book turned into a Gapo Epub usually clocks in under 5MB, saving massive space on your phone or e-reader. Gapo Epub
Gapo Epub offers robust metadata scraping. When you add a loose ePub file to the app, it automatically fetches cover art, author bios, and series information from online databases. This turns a messy "Downloads" folder into a professional-looking digital bookshelf. You are not locked in