Meet Industry Standards and Best Practices

It can be difficult to keep track of ever-changing EPUB requirements, evolving standards, and poorly-documented best practices. We make it our business to keep on top of industry standards, retailer requirements, and digital publishing best practices.

W3C EPUBCheck (4.2.2)

validates your EPUB for conformance to the EPUB specifications. EPUBCheck is the World Wide Web Consortium's (W3C's) official tool.

DAISY Ace (1.1.1)

verifies that your EPUB complies with digitally accessibility standards. Ace is developed by the DAISY Consortium.

KindleGen (2.9)

ensures that your EPUB is ready for distribution on the Kindle platform. KindleGen is Amazon's software for creating a Kindle ebook from your EPUB.

EPUB Preflight (0.5.2-alpha)

audits your EPUB for a variety of best-practices issues that no other tool checks for.

Build on Our Experience

We've learned all that we know about ebook publishing in the school of hard knocks, through over 20 years building ebooks for commercial and educational publishers. Your EPUBs can enjoy the benefits of the experience we’ve baked into EPUB Preflight.

An Easy-to-Use Preflight Platform

  1. Sign up to create a free account.
  2. Upload your EPUB.

    EPUB Preflight audits the EPUB and notifies you by email when the audit is completed.

  3. Fix the issues in your EPUB, upload it again, and verify the corrections.
  4. Share the final report with authors and other stakeholders.
  5. Distribute your EPUB!

Try It

When you sign up now, you receive 1 GB of free preflight upload credit. That is enough credit to upload 500 average-sized EPUBs (2 MB each on average).

When you’re ready to do more, you can purchase additional credit. We don’t charge a subscription, your upload credit never expires, and your uploads are never deleted unless you tell us to.

Sign Up

Let Us Help You

EPUB Preflight is a service of Book Genesis. If your requirements are not being met by existing tools, contact us and let’s talk about how we can help you.