Different e-readers require different file types. Using the wrong one can lead to broken formatting or files that won't open. An Introduction to E-Readers & File Formats - eWritable
: One of the largest stores with over 875,000 titles, including a section with 32,000+ free books . knigi dlia elektronnyi skachat
: The oldest digital library in the Russian internet, excellent for classics and academic texts , though primarily for online reading. Different e-readers require different file types