KDPEasy PDF Assembler

Turn a stack of page images into one KDP-ready PDF — right size, right bleed, right gutter.

Choose your book's size and bleed

Your artwork sits inside the page with white space around it. This is what most coloring books use.

How many pages will this book have?

We'll count your uploaded pages until you type a number.

Add inside (gutter) margin 0.375″ per KDP's table for up to 150 pages

Books need extra space near the spine so the binding doesn't swallow your content. We reserve it automatically whenever a page needs resizing. Pages that are already the right size keep whatever margin they were made with — we can't add gutter to those after the fact.

Left and right pages

My first uploaded page is page number

Odd pages sit on the right of an open book (spine on their left), even pages on the left. Leave this at 1 unless your uploads start mid-book.

Upload your pages

PNG or JPG, any sizes, as many as you like. Drag them in, click to browse, or paste with Ctrl+V.

Pages that need resizing

Fill the space around your artwork

Looks at the edge of each image and chooses White, Solid, or Blur.

Image format for resized pages

Your download is always one PDF file — this only affects how resized pages are compressed inside it.

Sharpest quality, best for line art. Files are larger.

Pages that are already the right size keep their original format.

Your pages

Choose your book size first

Then drop your page images here — PNG or JPG, as many as you like.

Your images never leave your computer.