MuPDF can access files in PDF, XPS, OpenXPS, CBZ, EPUB and FB2 (e-books) formats, and it is known for its top performance and high rendering quality.
With PyMuPDF you can access files with extensions like ".pdf", ".xps", ".oxps", ".cbz", ".fb2" or ".epub". In addition, about 10 popular image formats can also be handled like documents: ".png", ".jpg", ".bmp", ".tiff", etc..