Free tools for self‑publishing authors
Quick, accurate answers to the questions that trip up print books. Every rule is checked against the platform’s own help pages; last checked on 20 Oct 2026.
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KDP margin & gutter calculator
Minimum inside, outside, top and bottom margins for your trim size and page count, with the exact PDF page size with or without bleed.
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Spine width & cover size calculator
Spine width for your page count and paper, the full cover size with bleed, and a free SVG cover template with all the guides.
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KDP & IngramSpark PDF checker
Upload any interior PDF and see what KDP or IngramSpark would flag, explained in plain English. Coming soon.
BoundReady
Want this done automatically for your whole book? Join the waitlist.
Upload your Word file and BoundReady sets the margins, gutter, page size and spine for your final page count, builds the print PDF, EPUB and cover, checks them against KDP, IngramSpark and Draft2Digital rules, and walks you through the upload.
- Free until you download, then $39 per book or $199 lifetime
- Waitlist members get first access and the Founders price