Quote:
Originally Posted by crankypants
- The mimetype file must not be compressed within the EPUB, and MUST be the first file. Only info-zip does this correctly ASFAIK.
And last, the BookId in content.opf is case sensitive. Here's a correct tag:
<dc:identifier id="BookId" opf:scheme="ISBN">1223456988</dc:identifier> |
It can also be done with 7-zip and probably others. The clue is that the compression level for the mimetype is usually called 'store'. So, first create an archive with only the mimetype and then add the rest.
The ISBN can be used as identifier, but it can be any code. A lot of people use UUID.