EPUB validator

Upload an EPUB file and check it with EPUBCheck, the W3C's conformance checker for EPUB 2 and EPUB 3. No signup, no card.

The check covers the ZIP container, the package document, the navigation and every content document. The file is checked and then deleted, never stored.

A check here counts like one API call: 2 credits.

Automate this with one POST /v1/epubcheck/check call (EPUBCheck as an API). A free account with an API key gets 10 free credits a day plus 100 a month.

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EPUBCheck is a project of the W3C; pagespool is not affiliated.