Private Online Tools

EPUB to Kindle: fix an EPUB so Send to Kindle accepts it

Repair an EPUB so Amazon's Send to Kindle accepts it - here in this tab, with nothing uploaded.

How to send an epub to kindle

  1. Drop the EPUB that Send to Kindle rejected (or that you are about to send).
  2. Read what was found and fixed.
  3. Save the fixed EPUB and send it with Send to Kindle, email or the Kindle app.

Why this one stays private

Send to Kindle refuses many perfectly readable EPUBs. Fixing them usually means uploading the book to a converter. Here the repair is done in your browser, and the only upload is the one you make to your own Kindle.

Questions

Do I need to convert EPUB to MOBI for a Kindle?

No. Since 2022 Amazon's Send to Kindle takes EPUB and converts it for your device, and no longer accepts MOBI. What goes wrong is EPUBs it refuses - which this repairs.

What does it fix?

A missing language, chapters that are not well-formed XHTML, missing table-of-contents entries and other faults known to trigger Amazon's E999 error. The report lists what it changed.

Can it make a MOBI or AZW3 file?

No. Writing Amazon's own formats is a job for Calibre or Kindle Previewer; for sending to a Kindle you no longer need either.

Does it work with books bought from Kindle, Kobo or Apple?

Only if they have no DRM. Copy-protected books are encrypted, and removing that is not something this site does. Books from Project Gutenberg, Standard Ebooks, Humble Bundle and most indie stores are DRM-free.

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