AI children's book generator
Turn a bedtime idea into a picture book.
Tell us the story in a sentence or two. In a minute or two you'll see it planned page by page, pitched at the right reading age, free and without an account. Like it? PromptBook writes every page and lays it out with pictures.
- 8–30 pages, one moment on each
- Words per page matched to ages 3–5, 5–7 or 8–10
- One illustration style from cover to last page
Reading your idea…
Planning every page and its picture · 0s
Plans usually take a minute or two. Keep this tab open.
While you wait, read how it worksYour picture-book plan is ready
or
Free · no card · no password needed. We email you when it's written.
Your book is being written
We've emailed . Click the link in that email to watch it being written. We'll email you again when it's finished (about an hour).
No email in a few minutes? Check your spam or promotions folder.
Your picture-book plan
Your book
Working title · you can change it before PromptBook writes a word
Want to read it before you commit?
PromptBook will write the opening of chapter 1 from this plan, free, with no account. Usually under 30 seconds.
Writing your opening…
0s · this is the same engine that writes the whole book
Chapter 1 ·
That's the opening, written from your plan.
Write the whole book free Free · no card · just an email addressReady to turn this plan into a book?
Continue with Google, or just give us your email address. PromptBook writes every page in the background and emails you when it's done. You don't need to keep this page open.
Free plan: the whole story, laid out page by page with placeholder pictures, ready to read and print. No card needed.
or
Free · no card · no password needed. We email you when it's written.
Reading level
Pitched at the right reading age
A picture book for a three-year-old and one for a nine-year-old are different things. PromptBook writes to one of three bands, and keeps every page inside it.
| Band | Who reads it | Words on a page | What the text sounds like |
|---|---|---|---|
| Ages 3–5 | Read aloud by a grown-up | 6–25 words | One short sentence a page, sometimes two. Simple words, sounds to say together, and a gentle refrain a child can join in with by the third reading. |
| Ages 5–7 | Early readers | 15–45 words | One to three plain sentences a page, a little dialogue and some light jokes. Most words are ones a child learning to read can sound out. |
| Ages 8–10 | Confident readers | 30–80 words | A short paragraph a page with richer words, real feelings and a bit of mystery or adventure. It doesn't talk down to them. |
Not sure? Choose the band for the child who'll listen, not the one who'll read. A five-year-old who loves being read to is happy with the 5–7 band.
Illustrations
Five illustration styles, one look all the way through
- Classic storybookWarm, painterly and lit like a lamp at bedtime. The safest choice if you can't decide.
- Soft watercolourSoft washes and fine lines, the look of a classic library picture book.
- Bright cartoonClean outlines, bold colour and big expressions. Good for funny stories and younger readers.
- Soft 3DRounded, plush-looking characters in warm light, like a gentle animated film.
- Crayon and pencilVisible crayon and pencil strokes, as if a child drew it. Lovely for stories about making things.
Before any page is drawn, PromptBook writes a short design sheet for each main character (what they are, their colours, clothes and size), and every illustration is drawn from that sheet. That is what keeps the hedgehog's blue scarf blue on page twelve. AI pictures can still wander a little, so look through each page; you can redraw any that miss.
Pictures and price
What's free, and what the pictures cost
A free account writes the whole story and lays it out page by page with friendly placeholder pictures. Your 1 free image credit a month can go on a real painted cover. You can read it, print it and share it straight away, and swap the placeholders for real art later.
Basic ($9.99 a month) includes 35 illustrations a month: enough for a 30-page picture book with its cover, painted from start to finish. You can cancel any time.
Every picture book is fully written either way. Only the artwork changes.
Picture-book pass
A fully illustrated picture book: up to 31 AI illustrations — every page plus the cover — and 10 redraws, for one picture book.
Exports without the PromptBook credit. Doesn’t count toward your 1-book library limit. Starting it doesn’t use your free monthly book.
$14.99, once. Nothing renews.
Create a free account, then buy: $14.99
The pass belongs to your account, so you sign up (free) first. Your plan comes with you.
Cheaper options:
- One month of Basic ($9.99) also covers one picture book like this: 35 illustrations a month, enough for a 30-page book, with clean exports while you’re subscribed. Cancel any time. See plans
- New to paid plans? Pro’s first month is free with code FREE, then $29.99 a month until you cancel.
- The pass costs more than a month of Basic, but it never renews and keeps this book’s clean exports while your account is open. It suits you if you don’t want a subscription.
For grown-ups
Keeping it safe, kind and private
- Gentle by design. Stories are written for small children: any peril is mild and sorted out quickly, and the ending lands softly.
- No photos, ever. We never ask for a picture of a child, and none goes into the illustrations. Describe your hero in words instead: curly red hair, a yellow raincoat.
- A first name is plenty. Please leave out surnames, schools and where you live. A nickname or an invented name works just as well.
- Read it first. You see every page before a child does, and you can rewrite any line in the editor.
- Private unless you choose. Your book stays in your account. Sharing it is a link you control, and nothing appears in our public gallery unless you publish it there and a person approves it.
Printing
Printing it for the shelf
Picture books export as a 10 × 8 inch landscape PDF, the shape of a classic picture book, with the words set large enough for the reading band you chose. There's a Word file too, if you'd rather lay it out yourself.
A home printer on good paper makes a lovely one-off. For a bound copy, most print shops and photo-book services can work from the PDF, as can print-on-demand services that offer a 10 × 8 inch landscape size.
It isn't an Amazon KDP paperback size. KDP paperbacks are at most 8.5 inches wide, so this PDF can't be uploaded to KDP as it is. If you re-lay the book out yourself from the Word file, remember that KDP asks you to declare AI-generated text and pictures.
Something smaller
Just want a story for tonight?
A picture book is made to keep, so it takes a little while to write and illustrate. If you only need a quick bedtime story to read from your phone, our free Writing Assistant can draft one in seconds. Come back here when there's a story worth printing.
From a bedtime idea to a book on the shelf
Tell the story
A sentence or two, the reading age, an illustration style and how many pages.
See every page planned
What happens on each page and what its picture shows, before anything is written.
PromptBook writes it
The whole story is written in one go so the rhythm and any refrain carry through, then each page is illustrated.
Read, print, share
Read it on screen, export a landscape print PDF or Word file, or share a private link with family.
Questions
Does the free plan include real illustrations?
A free account writes the whole story and lays it out with placeholder pictures on every page. Your 1 free image credit a month can go on a real painted cover. Basic ($9.99/month) includes 35 illustrations a month, enough for a 30-page picture book with its cover.
Can my child be the hero of the story?
Yes, by first name or nickname. Describe them in words if you like: their hair, a favourite jumper, a toy they carry everywhere. We never take photos, and please leave out surnames, schools and where you live.
What ages is it for?
Three reading bands: 3–5 (read aloud, a sentence a page), 5–7 (early readers, a few simple sentences a page) and 8–10 (confident readers, a short paragraph a page). The words on every page stay inside the band you choose.
How long does it take?
The page-by-page plan takes a minute or two. The story itself is written in a single pass. With placeholder pictures the book is usually ready well within the hour; with full illustrations it takes longer, because each page is painted separately. We email you when it's done.
Can I print it or sell it?
You can export a 10 × 8 inch landscape PDF or a Word file and print as many copies as you like at home, at a print shop or with a photo-book service. The PDF isn't an Amazon KDP paperback size (KDP paperbacks are at most 8.5 inches wide), so it can't be uploaded to KDP as it is.
How many pages can a picture book have?
From 8 to 30 pages in the app. Plans made on this page can be 8, 12 or 16 pages, which suits most bedtime stories; you can choose a longer book once you have an account.
Can I get one fully illustrated book without a subscription?
Yes. The Picture-book pass is a one-off payment of $14.99 for one fully illustrated picture book. Nothing renews. A single month of Basic ($9.99, cancel any time) costs less and includes 35 illustrations; the pass is for people who would rather not start a subscription.