What is ePubCheck?

ePubCheck provides validation information for EPUB 2 and 3 documents. We highly recommend validating your ePub file before uploading and slicing. Validation can be done here:

IDPF ePub Validator (file size = 10MB or less)

If your file is larger than 10MB, please contact us and we can validate the file for you.

More information about ePubCheck can be found here

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