Developer's DescriptionBy Peter SorotokinValidate your EPUB files on PC.EpubCheck is a tool to validate IDPF EPUB files, version 2.0 and later. It can detect many types of errors in EPUB. OCF container structure, OPF and OPS mark-up, and internal reference consistency are checked. EpubCheck can be run as a standalone command-line tool or used as a Java library.