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Wednesday, April 8, 2015

ERROR: Mimetype entry missing or not the first in archive EPUB


When you extract files from an EPUB, fix them and update the archive, that changes the ordering inside.

When you try to submit a revised EPUB, you will get this error:

ERROR: Mimetype entry missing or not the first in archive

To fix it, extract all content and make a new archive with an UNCOMPRESSED mimetype file FIRST like so in Linux/Unix/Apple:

zip -X0 book.epub mimetype

then remove the mimetype from the contents and add the rest like this:

zip -X8Dur book.epub *

That should refresh the order and compress all the other files.

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