Export a Single-Sided, KDP-Compliant Interior PDF

With matter and cover in place, the interior export is the easy part — the app already knows your trim size, bleed, and page structure. The Interior section lays the whole book out as three cards — front matter, coloring pages, back matter — with the export controls on top. Note the automatic blank pages (4, 6, 44, 46 below) keeping the print spreads correct:

Reviewing What Goes In

Click the middle coloring pages card to open Review Coloring Pages — a grid of every page as it will print, including the automatic blank pages. KDP offers no single-sided printing option, so a proper coloring book simulates it: artwork on every right-hand page, a blank on every left-hand page, in strict alternating order — the standard defense against ink bleed-through ruining the next drawing. Doing that by hand for a 50-page book means inserting and ordering dozens of blanks without a single slip; Coloring Book Engine lays out the single-sided interior automatically. Confirm and you’re set.

Export Options

Control	What it does
Auto fit contents	Scales page content to sit inside the KDP safe area automatically. Leave it on unless you have a reason not to.
Add N % safe margin	Extra breathing room (0–10%) inside the safe area, on top of auto-fit.
Export ARC & Digital	When checked, the export also produces a Digital edition (for PDF sales/Etsy) and an ARC (advance review copy for your review team) alongside the print-ready Paperback.
Export Book	Runs the export.

What You Get

The export writes into your project’s book folder and pops a summary — “Export Complete!” with per-edition page counts (e.g., Paperback: 108 Pages, Digital: 54 Pages, ARC: 54 Pages) and an Open Folder button. No credits are spent here; it’s pure assembly.

Next stop: validate everything before it goes anywhere near KDP.