System upgrade: the Children's Books add-on for the Book Publishing System

Make books for children too.

Colour picture books, chapter books, coloring books and activity books, with your own pictures or pictures Claude draws.

Four kinds of children's book, made with the system you already have. Picture books, read aloud to a child, as full-colour Kindle eBooks with every word large enough to read on a small tablet. Chapter books for ages 6 to 10, read alone a chapter at a time, as a paperback and a Kindle eBook with a picture every few pages. Coloring books for ages 2 to 8, as paperbacks of bold line pictures, every page checked for the child's age. Activity books for ages 3 to 8: mazes, dot-to-dots, tracing, word searches, matching and spot the difference, every puzzle made and checked by the system, with the answers at the back. Each with the research, the checks, the cover, the listing and the pre-flight, and the audiobook for picture and chapter books.

Your pictures, or drawn ones. Upload your own drawings, paintings or photographs and each is checked and prepared for the page. Or Claude draws simple, friendly pictures to a palette and a character sheet, so the characters look the same on every page. Mix the two as you like. Claude will not draw a known character or imitate another book's pictures.

Add the Children's Books add-on The four kinds of book

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More power, more versatility

Open your system to a whole new shelf: books for children.

The Children's Books add-on plugs into the system you already have and opens up four new kinds of book, each with its own research, checks and production. Your system goes from adult nonfiction to books for every age from toddlers to ten-year-olds.

41Claude skills in your system: your 20, plus 21 for children's books

2xmore than double the skills in your system: from 20 to 41

4new kinds of book, for every age from toddlers to ten

Unlockedcolour eBooks, pictures, coloring pages, puzzles and audiobooks

What you can do	Your system on its own	With the add-on
Kinds of book	Adult nonfiction	Also picture books, chapter books, coloring books and activity books, for ages 0 to 10
Colour	Black-and-white interiors	Also full-colour picture books as fixed-layout Kindle eBooks, every page composed
Pictures	Line drawings and figures	Also your own pictures prepared for the page, or friendly characters Claude draws the same on every page
Made by the system	Worksheets, checklists and tables	Also coloring pages checked for small hands, and mazes, dot-to-dots, tracing, word searches, matching and spot the difference, each made and checked, with an answer key
Right for the reader	Checked for adult readers	Read-aloud and reading-level checks for each age band
Formats	Paperback, hardcover and Kindle	Also fixed-layout eBooks for Kindle Create, and paperbacks for coloring and activity books
Length	Planned to a page ceiling set at the start	The same for chapter books, with no limit but Amazon's; picture, coloring and activity books planned to an exact page count from the start
Audiobooks	Not included	Audiobook scripts for picture books and chapter books

One system, far more ways to publish: gift books, bedtime stories, first chapter books, rainy-day activity books. The versatility to follow your ideas wherever they lead.

What it adds

Four kinds of children's book, each built the way it is used.

It installs beside the system you have and uses its projects, its Chrome sidebar for Amazon, its listing rules and its after-launch tools. It is an add-on, so it needs the core nonfiction Book Publishing System.

Picture books · read aloud · ages 0 to 8

A colour Kindle eBook, every page composed

Research in the Chrome sidebar: the shelf for the age and theme, whether the theme is evergreen or seasonal, and what parents dislike in the 2- and 3-star reviews
The story written page by page, with read-aloud checks: words for the age, words per page, sentence length, long words, rhythm and rhyme
Your own pictures checked at 300 pixels per inch, or flat colour pictures drawn to one palette and one character sheet
Every word set large enough to need no pop-up zoom on a 7-inch screen, by KDP's own measure
The PDF and page images for Kindle Create, KDP's free program, a contact sheet of the whole book, and the eBook cover
The listing with the reading age, the pre-flight, and the audiobook script for ACX with a pause at every page turn

Chapter books · read alone · ages 6 to 10

A paperback and a Kindle eBook, a picture every few pages

Research in the Chrome sidebar: the shelf and its series, whether the subject is evergreen, what parents and children dislike, categories and keywords
An early chapter book (ages 6 to 8) or a chapter book (7 to 10), checked for chapter length, sentence length, reading level and hard words
Page settings made for young readers: large type, generous spacing, no words split across lines
Your own pictures turned to greys for the printed page, or black line pictures Claude draws from the character sheet
A colour cover from your artwork or a picture Claude draws, with the title set over it, and a hardcover from 75 pages
The listing, the pre-flight, and the audiobook for KDP's virtual voice or ACX

Coloring books · to colour · ages 2 to 8

A paperback of bold line pictures, every page checked

Research in the Chrome sidebar: the shelf for your theme, whether it is evergreen or seasonal, what parents dislike in the low-star reviews, categories and keywords, and a list of picture subjects
Never stuck for what to draw next: the research gives you a list of picture subjects parents look for, and Claude can draw any of them
Toddler books (ages 2 to 4, one big thing a page) or kids' books (4 to 8, a simple scene a page)
Your own drawings, scanned or photographed, cleaned into crisp black lines; or pictures Claude draws at the right line weight
Every page checked for the age: how thick the outlines are, and any space too small for a child to colour, shown in red
Printed single-sided, with a page to test colours behind each picture, so markers spoil nothing; a "This book belongs to" page
A cover showing the inside coloured in, the listing, and the pre-flight

Activity books · to solve · ages 3 to 8

Puzzles that work, every one checked, answers at the back

Mazes, dot-to-dots, tracing, word searches, picture matching and spot the difference, mixed as you choose
Never short of puzzle ideas: the research checks whether your theme is evergreen or seasonal, proposes the mix for it and 20 to 40 activity ideas, and the system makes every puzzle
Two age bands: 3 to 5 (wide maze paths, big tracing, fewer dots) and 6 to 8 (bigger mazes, word searches, more dots)
Every maze has exactly one way through; every word is in the word search exactly once, with no rude word hidden in the letters
Dot numbers placed so none sits on another; every spot-the-difference has exactly the number its title promises
The answer key drawn for you, four to a page, each labelled with its page
A colour cover of the inside, the listing, and the pre-flight

Good to know

Kindle Create. KDP makes a picture book's Kindle file with Kindle Create, its free program for Windows and Mac. It is the one step you do on your own computer; Claude prepares everything it imports and explains each screen. Chapter books need no extra program.
Colour. An eBook has no colour surcharge. On KDP's 70% royalty plan the add-on shows the file's delivery cost before you choose, so you pick the best plan for each book. Chapter, coloring and activity paperbacks print in black ink, the most economical way to print, which keeps your list price friendly for parents.
Chapter books reward a series: the research finds the subject the big publishers' series leave open, and the add-on keeps your hero the same from book to book.
Coloring and activity books are paperbacks, and every page is checked for the age: the line weight and spaces of a coloring page, and puzzles that really work. That is exactly what parents look for in the reviews.
AI pictures are disclosed. Pictures and stories Claude makes are "AI-generated" in KDP's terms. Your own pictures are not. The add-on records which, page by page, for KDP's form.

The numbers, approximately

Four kinds of children’s book, each with its own numbers.

What the market looks like for each kind of book, how children read, and how long each kind runs.

Picture books read aloud, ages 0 to 8

Readers51%

of US children aged 0 to 5 are read aloud to at home 5 to 7 days a week.

Source [1]

Shelf32 pages

the usual picture book, with about 500 to 600 words.

Source [2]

Chapter books read alone, ages 6 to 10

Market$5.4 billion

US publishers’ revenue from children’s and young adult fiction in 2025.

Source [3]

Readers70%

of US 6- to 8-year-olds enjoy reading, and nearly half (46%) read books for fun 5 to 7 days a week.

Source [4]

Shelf4,000–15,000

words: the usual chapter book, in short chapters with a picture every few pages.

Source [5]

Coloring and activity books to colour and solve, ages 2 to 8

Market+6%

growth in US print sales of children’s nonfiction in Q3 2025, the category where coloring and activity books are filed.

Source [6] [7]

ShelfPaperback

the format parents buy them in, with a free ISBN from KDP for each one.

Source [8] [9]

All figures are approximate: US figures from the sources below, read on 29 September 2026. They describe the market, not what any one book will earn.

Not another children's book generator

Children's books parents trust, and come back for.

Parents notice fast: pictures that do not match the words, text too small to read, mazes with no way out, word searches missing words. Every one of those is checked here before a book reaches KDP.

Where it counts	Typical AI book generators	This system
Research	Guesses what children like.	The shelf for your age and theme read live, and what parents dislike in the low-star reviews, counted.
Evergreen	No check on whether a theme is lasting or a passing craze.	Looks for evergreen themes that parents and grandparents buy year after year (bedtime, animals, dinosaurs), plans a seasonal book's launch (Christmas, Easter) before its peak, and says when a theme is only a craze.
Right for the age	One size for every child.	Read-aloud and reading-level checks, line weights and spaces sized for small hands, puzzles pitched for 3 to 5 or 6 to 8.
Pictures	Characters that change from page to page.	One palette and one character sheet, so every character looks the same on every page, or your own pictures checked and prepared.
Puzzles	Mazes with no way through, missing words, the wrong number of differences.	Every maze has exactly one way through, every word is there exactly once, every difference is counted, and the answers are at the back.
Length	Pages or pictures rationed by the plan, or credits for every page.	Nothing metered: chapter books up to Amazon's limit, planned to a page ceiling set at the start; picture, coloring and activity books planned to the exact page count you choose.
Production	Images you still have to lay out.	Fixed-layout eBook files for Kindle Create, print-ready paperbacks, covers built for the page count, and the pre-flight.

No page limit

As many pages as the book needs, for every kind of children's book

Many quick children's book tools ration pages or pictures by plan, or charge credits for every page. The Children's Books add-on never meters the length of your books.

No page limit but Amazon's. Chapter books up to 776 pages on cream paper or 828 on white; coloring and activity books up to 590 on the white paper of the large 8.5 x 8.5 and 8.5 x 11 sizes; no limit for a Kindle eBook.
No credits per page, no picture allowance: a 24-page picture book and a 100-page activity book go through the same steps.
A page ceiling for every chapter book, set when you start it and confirmed by you, with every chapter written to fit.
Picture, coloring and activity books planned to an exact page count from the start, so each book comes out the length you chose.

How much Claude writes and draws for you in a day depends on your own Claude plan; the add-on itself never limits the length of your books.

Books that work for the child and satisfy the grown-up who bought them: that is what good reviews are made of.

Your time back

Hours of fiddly layout, done for you.

Children's books look simple and take ages to make by hand. The add-on does the painstaking parts.

Placing words on every picture-book page and checking they are big enough.

Every page composed, every word sized to need no zoom on a small tablet.

Cleaning up scans of your drawings.

Your drawings turned into crisp black lines, specks and shadows removed.

Drawing mazes and word searches, then checking them by hand.

Puzzles made and checked in seconds, the answers drawn for you.

Laying out single-sided coloring pages and test pages.

The whole interior built, with a contact sheet to review.

Working out the spine and the cover for each page count.

The wrap built for the exact page count on white paper.

Make the book once, carefully, and let the system handle the parts that eat your evenings.

See them before you make your own

Four finished books, from the first idea to the pre-flight.

The whole of the example picture book laid out as it opens: the cover, the title page and twenty story pages of a hedgehog planting a seed — **Nell and the Very Slow Seed**, a 24-page picture book for ages 3 to 5: about 280 words, nineteen pages drawn by Claude and one through the "your own picture" route, every page composed, the eBook cover, the listing and the read-aloud audiobook script.

Two typeset pages from the example chapter book: the opening of the first chapter, and a line drawing of Grandad holding up the kite while Mo holds the spool and Biscuit waits — **Mo and the Runaway Kite**, an early chapter book for ages 6 to 8: six chapters, a 26-page paperback, three line pictures drawn by Claude and one of "your own", a colour cover, the eBook, the listing and the audiobook script.

The example coloring book: its colour cover with a sunflower, a butterfly and a ladybug, then inside pages: This book belongs to, a page of boxes to test colours, and line pictures of a sunflower, a snail and a strawberry, each with its name underneath — **My First Garden Coloring Book**, for ages 2 to 4: sixteen pictures, fifteen drawn by Claude and one (the snail) a photographed drawing cleaned by the "your own drawing" route, every page checked for the age, a 37-page single-sided paperback with colour-test pages, a cover of the inside coloured in, the listing and the pre-flight.

The example activity book: its colour cover with a hedge maze, a bee, a sunflower and a ladybug, then inside pages: a maze, a dot-to-dot apple, a word search, a spot-the-difference garden and a page of answers — **Garden Puzzle Fun**, for ages 6 to 8: twenty activities (four mazes, four dot-to-dots, three word searches, two picture matches, three spot-the-differences, four tracing pages), every one checked, the answers at the back, a 28-page paperback, a colour cover, the listing and the pre-flight.

All four are examples, not products: Claude wrote the stories and drew most of the pictures for the add-on, and the files record that, as they would for a book of yours. Every file came out of the add-on's own tools, and each example's README lists the commands in the order they ran.

What you receive

Two files and a manual. Installed in minutes beside your system.

Install the plugin like the one you have, attach the folder in your production project and say "install the children's books add-on". Claude adds the files without changing any of your system's own, and checks every one is there.

The plugin

Seven picture-book skills
Six chapter-book skills
Four coloring-book and four activity-book skills

The folder

Read-aloud and reading-level checks
Page layout and picture tools
Line-art checks and puzzle makers

The manual

PDF and editable Word
Parts A to D: picture, chapter, coloring and activity books

Four finished examples

A picture book and a chapter book
A coloring book
An activity book

Your pictures, or drawn ones

Uploads checked at 300 pixels per inch at the size they print, cropped, turned to greys or cleaned into line art as the page needs
Drawings in one palette with one character sheet, so every character stays the same
KDP's AI answer recorded for every picture and the cover

Bonus: the Children's Book Toolkit

A 32-page storyboard and page-turn planner, numbered the way the add-on numbers the pages
An age-band reference card: word counts, reading levels and type sizes for each age
A character consistency sheet: front, side and back, the palette and the props
Five more: a read-aloud test checklist, a coloring and activity planner, Kindle Create step by step, a children's content rules card and a seasonal planning sheet
A step-by-step installation and setup guide for the add-on, Kindle Create included
The four finished example books as PDFs: each one's pages and cover

A quick fit check

For grown-ups making careful books for children.

Good fit

Parents, grandparents and teachers with a story to tell
Illustrators who want their pictures in a finished book
Writers who would rather not draw, using Claude's pictures
Anyone planning a series with the same characters
Anyone who draws and wants a coloring book of their own pictures
Teachers and parents who want puzzle books that really work
Authors who want an audiobook as well

Not a fit

You want a known character, or pictures in another book's style
You want your picture books as colour paperbacks (here they are Kindle eBooks)
You cannot install a free program (Kindle Create) for picture books
You do not have the Book Publishing System (the add-on needs it)

Your system upgrade: the Children's Books add-on

Add picture books, chapter books, coloring books and activity books to your system.

$34 one payment

Sales tax or VAT is added to the price at checkout, according to your country.

Every future update to the add-on is included.

Twenty-one skills in one plugin
Picture books: colour, fixed-layout Kindle eBooks
Chapter books: a paperback and a Kindle eBook
Coloring books: a paperback for ages 2 to 8
Activity books: puzzles made and checked, answers at the back
Your own pictures, or pictures Claude draws
Checks for the child's age: read-aloud, reading level, line weight
Research that looks for evergreen and seasonal themes
Audiobook preparation for picture and chapter books
Four finished example books
The manual as PDF and Word
Bonus: the Children's Book Toolkit, with a step-by-step setup guide, a 32-page storyboard, an age-band reference card, a character consistency sheet, five more, and the four example books as PDFs

Do I need the Book Publishing System?

Yes. The add-on installs into the repository the system set up and uses its projects, its listing rules, its pre-flight and its after-launch tools.

Do I need the Fiction add-on as well?

No. The two add-ons are independent. This one works on the system alone. If you have both, they install side by side and share their audiobook and cover tools.

Can I use my own illustrations?

Yes, on any page. Each picture is checked against the size it prints at 300 pixels per inch (below 200 it is refused, between 200 and 300 you are warned), its shape and colour are prepared for the page, and for a picture book the contrast behind the words is checked. For a coloring book, a drawing in black pen, scanned or photographed flat, is cleaned into crisp black lines and checked for the child's age. You confirm you own the pictures or have a licence to use them in a book.

What are Claude's pictures like?

Simple and clear: flat colour for picture books, black line drawings for chapter books, bold outlines with wide spaces for coloring books, drawn to one palette and one character sheet so the characters match on every page. You approve the first page before the rest. They are friendly pictures, not painted art.

What makes the coloring books right for the age?

Every page is measured: the thickness of the outlines, how many spaces there are to colour, and any space too narrow for a small hand, which the proof shows in red. A toddler book (ages 2 to 4) wants very thick outlines and big spaces; a kids' book (4 to 8) can have more detail. The pages print on one side of the paper, with a page to test colours on the back of each picture, so markers spoil nothing.

What makes the activity books different?

Every puzzle is made by the system and checked before it reaches a page: each maze has exactly one way through, each word search has every word exactly once (and no rude word hidden among the letters), dot-to-dot numbers never sit on each other, and each spot-the-difference has exactly the number of differences its title promises. The answers are drawn for you at the back. Those are the very things parents complain about in activity books.

Why do picture books need Kindle Create?

KDP makes a picture book's Kindle file in Kindle Create, its free program for Windows and Mac, from a PDF or page images with the words already on them. The add-on makes exactly that, with every word set large enough to need no pop-up zoom, and walks you through the program's screens.

Can the books be audiobooks?

Yes. A picture book goes to ACX with a human narrator, because KDP's virtual voice needs a reflowable eBook and a picture book is fixed layout. A chapter book can use either: KDP's virtual voice, an invite-only beta, or ACX. Coloring and activity books are paperbacks, so they have no audiobook. Claude prepares the script and the square cover; it never records audio.

Which books come as paperbacks?

Chapter books, coloring books and activity books are paperbacks, printed in black and white with a full-colour cover. Picture books are made as colour Kindle eBooks, with a print proof to look at.

Is there a page limit?

No, only Amazon's: up to 776 pages for most paperbacks on cream paper or 828 on white (590 on the white paper of the 8.5 x 8.5 and 8.5 x 11 sizes coloring and activity books use), 75 to 550 for a hardcover. A chapter book gets its own page ceiling when you start it, and every chapter is written to fit. Picture books, coloring books and activity books are planned to an exact page count from the start, so the book comes out the length you chose.

What can a children's book earn?

Every book is different, so we make no income claims. What the add-on does is give each book its best start: the shelf researched, the book checked for the child's age, the pictures consistent, the puzzles working, clean files. How much it earns depends on the book, the pictures, the price, promotion and your persistence.

Upgrade your system with children's books: add it to your order.

Picture books, chapter books, coloring books and activity books, your pictures or drawn ones, from the first idea to the pre-flight.

Childrens Books Add-on for the Book Publishing System

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