EPUB and PDF explained
EPUB is essentially a website in a box — a ZIP of XHTML and CSS. Because the content is reflowable, the reader chooses the font size and the text re-wraps, rather than being locked to a page.
PDF describes a page as a fixed arrangement of text, vector graphics and images. Unlike a word processor document, it is designed so the page looks identical everywhere — which is exactly why it is awkward to edit.
- Where EPUB files come from
- E-book stores, library lending and self-publishing.
- Where PDF is used
- Contracts, invoices, reports, forms, academic papers and scanned documents.