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kobolabs / epub-spec

Details on the elements of the ePub spec that Kobo supports, as well as other information on the Kobo reading platforms.

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Naming files as [ISBN].epub

dkurth opened this issue · comments

commented

The spec says:

"[The dc:identifier] should contain the eBook ISBN, also supplied in the external metadata. However, if this field does not contain the eBook ISBN, it must be in the ePub file name."

For cases where the ISBN is provided in the filename, can you tell me which filename formats are supported? For example:

  • 9783161484100.epub
  • 978-3-16-148410-0.epub
  • 9783161484100_some_text.epub
  • 9783161484100-some-text.epub

Thanks!

commented

Of those four the only format that will be rejected automatically is the second. It's possible that any format where the ISBN does not contain dashes and appears at the start of the file name will be processed successfully but using any of the other three formats guarantees that the ISBN will be read.

  1. 9783161484100.epub - Supported.
  2. 978-3-16-148410-0.epub - Not supported.
  3. 9783161484100_some_text.epub - Supported
  4. 9783161484100-some-text.epub - Supported