The EPUB file type is primarily associated with 'Open Publication Structure' by International Digital Publishing Forum (IDPF). .EPUB is the file extension which refers to two open standards, the Open Publication Structure (OPS) and Open Container Format (OCF), produced by the IDPF. .EPUB allows publishers to produce and send a single file through distribution and offers consumers interoperability between software/hardware for unencrypted reflowable digital books. OEB, originally produced in 1999, is the precursor to OPS. .EPUB files are a ZIP file with XML/HTML eBook content along with a XML file describing the contents. You can use the Adobe Digital Editions program to read these files.

'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database

System Info for File Extension .EPUB

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and information FILExt collected directly from user systems.

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