Free Tool

Validate your EPUB before you publish it.

Upload a DRM-free .epub file and we will run it through EPUBCheck so you can catch packaging and spec problems before retailers do. Your uploaded file is deleted immediately after the check finishes.

Simple check. Clean output. No clutter.

  • Runs against the industry-standard EPUBCheck validator
  • Works with normal DRM-free EPUB uploads
  • Deletes temporary upload files right after validation
As soon as you pick a file, we validate it. No extra upload button nonsense.