Free tool · Publishing readiness
Check your book
Upload your manuscript (.docx, .epub, .pdf) and cover, add your listing details, and see clear results — separated into what this tool measured, what only the store can confirm, and what needs human judgement.
Good to know
Does this replace the store's checks?
No. It catches common problems early. Stores run their own validation and previewers on upload; always page through your files there before publishing.