is a format developed by the International Digital Publishing Forum. It is characterized by the XML- and XHTM-based optional use of CSS styling. The main feature of this format is the use of reflowable text (word wrap) which makes it possible to adapt the image to different device displays. The ePub file is a zip-archive with an .epub extension.
JPEG is one of the most popular graphic formats used for storing still images and similar images. JPEG algorithm is capable of compressing the image as lossy and lossless. The most widely used JPEG received in digital photography and picture archiving and communication via the Internet. JPEG compression is not suitable for drawings, text and iconic graphics.