– PDF files can be opened on almost any device: Windows, macOS, Linux, Android, and iOS. Free software like Adobe Acrobat Reader, Foxit Reader, or even web browsers support them.

: Projekat u Hrvatskoj koji omogućava učenicima i nastavnicima pristup digitalnim izdanjima lektira i klasika svetske književnosti (poput dela Šekspira, Dostojevskog i Kafke) u PDF i drugim formatima [19].

Unlike other e-book formats (such as EPUB or MOBI), a PDF file preserves the exact layout, fonts, images, and formatting of the original printed page. This means that a PDF book looks the same on a computer screen, tablet, or smartphone as it would on paper. For textbooks, academic papers, manuals, and illustrated books, this reliability is a major advantage.