Private EPUB validator online
Free DOCX preflight
KDP book formatter preflight for your Word manuscript.
Open the DOCX you intend to publish. Find hidden comments, tracked changes, missing heading structure, and suspiciously short content without uploading the manuscript.
✓Manuscript stays in your browser✓Comments and revision detection✓Heading and image inventory
Private by default
Drop in the file you plan to publish
Choose a DOCX or EPUB. This first check runs in your browser; your manuscript is not uploaded.
A formatter needs a clean source before choosing fonts
Layout cannot repair uncertainty about which manuscript is final. First remove editorial residue, use consistent chapter headings, and confirm every required section is present.
The browser preflight reads the DOCX package structure. It does not send your prose to a server and it does not alter your file.
- Accept or reject every tracked change
- Delete comments and placeholder text
- Use real heading styles for chapter titles
- Keep one approved source file
What the paid release adds
The free scan tells you what to review. A release pass turns one approved text-led manuscript into a checked EPUB and print interior, then keeps metadata, cover dimensions, sample pages, and launch copy tied to that version.
FAQ
Frequently asked questions
Does this KDP book formatter upload my manuscript?
No. The free DOCX inspection runs in your browser. A source file is uploaded only inside a private paid project after you explicitly choose Upload.
Can it detect tracked changes in Word?
Yes. It checks the document XML for tracked insertions and deletions and reports embedded comment files.
Does a clean scan guarantee KDP acceptance?
No. It is an early structural preflight. Final acceptance also depends on trim, margins, fonts, images, PDF export, cover, metadata, and KDP's review.
Ready to lock the clean manuscript?
Create the release workspace only when you know which source version should ship.