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Bertram Group eBook Publisher Requirements

The file format that we want you to upload to our SFTP server (we also support FTP) should be compressed and named – ISBN.zip

  • ISBN is a 13 digit book identifier.

Contents of the Zip file should contain:

  • ISBN.xml – ONIX file of standard 2.1 or 3.0 (either short or referenced tag version)
  • ISBN.JPG – front cover image
  • ISBN.pdf / ISBN.epub – the ebook / epub itself.


  • We support other zip formats such as gzip.
  • Content must not have been previously DRM'd.
  • Preferably zip to be password protected - and for the password to be agreed with us in advance.

Introduction to Bertram Group EDI
Customer EDI FAQ
Web Service Implementation Guide