Format Your Book for Amazon KDP — in 5 Minutes
KDP rejects badly formatted files and readers punish ugly interiors. PaperbackKit takes your messy Word manuscript, finds the chapters with AI, and typesets a professional 6×9 print PDF plus EPUB — margins, page numbers, running heads, all to KDP spec.
Drop your .docx here or click to choose
Word manuscripts up to 15MB · your file is deleted after processing
Frequently asked questions
What trim size and margins do you use?
6×9 inches — the most common trade paperback size on KDP — with mirrored margins and a gutter that meets Amazon's requirements for your page count. More trim sizes are coming.
Does my manuscript need to be cleaned up first?
No — that's the point. Inconsistent headings, stray blank lines and manual indents are handled automatically. Tools like Atticus ask you to spend 30–60 minutes preparing your file; PaperbackKit does that step for you.
What files do I get?
A print-ready PDF interior for KDP paperback, and an EPUB for Kindle and other e-readers.
What about my book cover?
KDP handles covers separately from the interior. PaperbackKit formats your interior; you upload your cover in KDP as usual.