EPUB
JPG files
EPUB (Electronic Publication) is an open e-book standard. EPUB files are designed for reflowable content, allowing readers to adjust text size and layout. They are commonly used for e-books and support interactive features, making them suitable for various e-reader devices.
JPG (Joint Photographic Experts Group) is a popular image file format for photographs and other graphics. JPG files use lossy compression to reduce file size while maintaining reasonable image quality.