How many Versions of EPUB are in use and why?
The primary versions of EPUB are EPUB 2 and EPUB 3 . EPUB 2 is an older version that is less flexible than EPUB 3. EPUB 3 is the latest version, offering more features and support for advanced layouts and interactive elements. Here's a more detailed breakdown: EPUB 2: Developed by the International Digital Publishing Forum (IDPF). Replaced the older Open eBook (OEB) standard. Offers limited text and image formatting controls. Some publishers still use EPUB 2 files, but it's gradually becoming obsolete. EPUB 3: A successor to EPUB 2, offering more features and flexibility. Supports HTML, CSS, and SVG for layout and typography. Includes support for video, audio, and interactive features. Is the current version of EPUB, according to the W3C . EPUB 3.x (subversions): EPUB 3.0: Approved in 2011. EPUB 3.0.1: A minor update to EPUB 3.0, approved in 2014. EPUB 3.1: Introduced in 2014, but faced some compatibility issue...