Librera Reader PRO is an easy-to-use and highly configurable reading app that supports most popular document formats, including: PDF, EPUB, EPUB3, MOBI, DjVu, FB2, FB2. Zip, DOC, DOCX, TXT, RTF, AZW, AZW3, CBR, CBZ, HTML, XPS, MHT, and more. With its simple, yet powerful interface, Librera makes reading a veritable pleasure.