Each group becomes a chapter of pages. Load a preset below — chips show short labels, hover to see full detail.
Bundle Presets — click to load a complete group set
📍 Location & Place
🏛️ Building & Interior Tour
🍽️ Food & Culinary
🌿 Nature & Macro
✨ Creative & Conceptual
Add narrative stops in order. Pages distribute evenly across stops. Or load a storyboard template below.
Storyboard Templates — click to load
Select a public domain book. Claude will generate a full illustration catalog — one prompt per page, grouped by chapter. Every title is IP-safe: published 1930 or earlier.
Search Project Gutenberg for more books
Select chapters to illustrate
Type a subject. Claude first proposes a handful of broad themes tailored to it — each broad enough on its own to generate dozens of distinct motifs. Pick the themes you want, then generate specific motifs from within them (minimum 6 motifs to unlock).
Frame Shape
Subject & Themes
3 Edition Type — Who is coloring?
4 Page count & edition
total coloring pages
Generate pagesto
Configure your book above to see the brief.
Fill in Object + Modifier + Complexity to unlock
✦ Paste your prompt catalog (or configure Prompt Generator first)
Paste your catalog above or configure the Prompt Generator first.
↓ Paste Claude's JSON response here
1Title & Subtitle
Pick a title
Pick a subtitle
2Back Cover CopyPlain text · goes on back of book
3HTML Book DescriptionKDP & Amazon product page · paste directly into the HTML field
Paste this into the KDP "Book Description" field using the HTML editor view (click <> in KDP editor)
4KDP Keywords0/7 keywords
KDP allows 7 keyword fields — each phrase above goes in one field. Copy and paste them one by one.
5Seriesone-time setup · expand to build▶
Series name
Volume
Series Generator
Get AI ideas for a series concept based on your book — name, tone, and full description
Series description
— plain text · Author Central
Series HTML
— Amazon series page HTML field
7Push & Save
↑ Drop a .md file here to restore a previous session
1 Strip images — select up to 12 color JPGs
🖼
Drop images here or click to select
Select up to 12 JPG/PNG color images — they tile across the top and bottom strips
2 Script font — DM Serif Display
DM Serif Display — clean, editorial serif. Fetch automatically or drop a TTF.
3 Book details
Back cover copy
4 Print specs
Trim size
Page count
Paper
Strip ratio
—Spine
—Cover width
—Strip images
—Font
Add images and fill in title to build.
1 Drop your BW images zip
📦
Drop your ZIP here or click to browse
Any image types inside — JPG, PNG, WEBP — sorted by filename
2 Page order — drag to reorder · click filename to rename
3 Edition
Double-sided selected — art fills every page, no blank verso.
LEFTY COVER MESSAGE
—
4 Print specs
Output filename
Trim size
Paper
—Art pages
—Total pages
—Spine width
—Est. file size
Enter a filename above to build.
1 Cover images — one top, one bottom. Center crops — edges trim as band grows.
Top image
↑
Upload top image
Bottom image
↓
Upload bottom image
2 Script font — DM Serif Display
Required for the title. Fetch automatically or drop the TTF file.
3 Book details
4 Layout
Band height30%
Top / bot split50/50
5 Live preview
1,600 × 2,560 px · JPG · 1:1.6 ratio · eBook spec
1,600Width px
2,560Height px
—Images
—Font
Add images, fetch font, and fill in title to build.
Kindle Create File Renamer
Your BW images are already named in order (01_00, 01_01…). Upload the zip — get back a zip with clean sequential names that Kindle Create accepts. Nothing leaves your browser.
⬡
Drop your BW .zip here, or click to browse
.jpeg / .jpg / .png sorted by chapter/page prefix automatically
From concept to KDP-ready files in one session. Work left to right through the five tabs.
→ THE WORKFLOW AT A GLANCE
✦
Prompt
Design your book & generate image prompts
📋
Metadata
Enter title, copy & edition details
📄
Interior
Upload BW art → KDP interior PDF
🖼
Cover
Upload color images → full spread PDF
📱
Kindle
Same images → eBook JPG 1600×2560
1 PROMPT GENERATOR
Design what your book looks like. Choose an object, a structure, and a complexity level — then send the brief to Claude. Claude writes all your image prompts in response.
Prompt Generator — full view
1 OBJECT — THE HERO OF EVERY IMAGE
Jar ✓Potion FlaskHourglassDiving HelmetHot Air BalloonTreasure ChestArmillary SphereIron KeyTerrariumLyre+ 20 more…
All objects are IP-safe — generic, historical, or public domain. Add custom objects below.
2 STRUCTURE & MODIFIER
Single
One modifier for all pages
Mixed
Groups of pages per modifier
Journey
Location stops in order
Around the World ✓Through the SeasonsUnderwaterIn the Wild+ more…
3 COMPLEXITY
Adult Edition ✓
Medium lines · marker & gel pen safe
Kids Edition
Bold thick lines · crayon safe
Generate Prompt Brief in Claude ↗
SINGLE
One theme throughout all pages. Good for tight, cohesive books.
MIXED
Divide pages into modifier groups. Good for variety books.
JOURNEY
Named locations in order. Good for travel & geography books.
💡 How it works: The brief goes to Claude in this chat. Claude writes your full image prompt catalog in its response — copy or download the output and use it in your AI image generator.
2 METADATA
Enter your book details once here. Everything flows to Cover, Interior and Kindle tabs automatically when you click Push to all tabs.
Metadata — book details & edition
Color in a Jar
Line 2 (optional)
An Adult Coloring Book of Preserved Botanicals
Fifty intricate scenes captured inside jars and vessels…
EDITION
📖
Double-sided
Art on every page
✋
Right-Handed
Art on right pages
🤚
Left-Handed
Art on left pages
Push to all tabs →
🤚 LEFT-HANDED EDITION EXTRA
When Left-Handed is selected, a gold panel appears with a celebratory message from a pool of 31 options. Hit Shuffle to cycle through, Lock to pin your favourite. This message prints on the interior declaration page only — not on the cover.
💡 Save your session: Click Export .md after filling in details. Drop it back in anytime to restore.
3 INTERIOR BUILDER
Upload your black and white line art as a ZIP. The engine sequences pages correctly for your edition type, adds a title page if needed, and outputs a single KDP-compliant PDF with correct bleed boxes on every page.
Interior Builder — after images loaded
📦
Drop your ZIP here or click to browse
JPG, PNG, WEBP — sorted by filename
p.1
p.2
p.3
…
p.40
40
Art pages
81
Total pages
0.182"
Spine
~20MB
Est. size
Build Interior PDF ↓
📖 DOUBLE-SIDED
Art on every page. Standard coloring book layout.
✋ RIGHT-HANDED
Art on odd pages. Blank verso. No bleed-through.
🤚 LEFT-HANDED
Declaration page 1, art on even pages, blank verso.
💡 Page count auto-flows: The moment you upload your images, the total page count is pushed to the Cover tab automatically. The spine width updates instantly — no manual entry needed.
4 COVER GENERATOR
Builds a full-spread KDP cover PDF — back cover, spine, and front cover in one file. Uses your color images as decorative strips across the top and bottom.
Cover Generator — key sections
1 STRIP IMAGES — up to 12 color JPGs
+
2 SCRIPT FONT — DM SERIF DISPLAY
✦ Get DM Serif Display
Or drop TTF
4 PRINT SPECS
Trim size
8.5 × 8.5" (square)
Page count (auto from Interior)
81
0.182"
SPINE
17.56"
COVER WIDTH
6
STRIP IMAGES
✓
FONT
Build Cover PDF ↓
STRIP IMAGES
Use your color versions — not BW. Square crops work best. 8-12 images gives good variety.
EDITION LABEL
LEFT-HANDED EDITION or RIGHT-HANDED EDITION appears automatically on front in gold spaced caps.
💡 Output filename: Automatically named cover_BLACK_[Title]_LH.pdf — includes edition suffix so files never get mixed up.
5 KINDLE COVER
Renders your eBook cover as a JPG at exactly 1600×2560px — Amazon's required specification. Uses the same strip images and metadata as the print cover. Drop images, fetch font, click build.
Kindle Cover — with live preview
Same setup as Cover tab: upload images, fetch font, adjust strip ratio with the slider. A live canvas preview updates as you change settings.
Build Kindle Cover JPG ↓
Color in a Jar
1600 × 2560px
? COMMON QUESTIONS
The spine width looks wrong
Check that the page count is correct — it auto-fills from the Interior tab when you upload images. Also verify that Paper type matches your KDP interior settings (white vs cream have different thicknesses).
My cover was rejected by KDP
Most common cause: spine width mismatch. KDP measures the actual page count of your uploaded interior PDF. Make sure the page count in the Cover tab exactly matches the page count in your interior file.
The font is not loading
Click "Get DM Serif Display" — the engine fetches it from Google Fonts. If that fails, go to fonts.google.com, search DM Serif Display, download the TTF, and drop it on the "Or drop TTF" button.
Where is my work saved?
Nothing saves automatically. Export a .md file from the Metadata tab to save your book details. Images are not saved — re-upload them in a new session. The .md drop zone restores your metadata instantly.
I want to add a new lefty message permanently
Ask Claude to add it to the LEFTY_MESSAGES array in cover.js, then redeploy. Or use Shuffle in the Metadata tab during your session — hit Lock when you land on one you love for that session.
QUICK REFERENCE
KDP BLEED SPEC
MediaBox: 8.625 × 8.75" TrimBox: 8.5 × 8.5" Bleed: 0.125" top/bot, 0.0625" sides Safe zone: 0.375" from trim
SPINE FORMULA
White paper: pages × 0.002252" Cream paper: pages × 0.0025" Cover width: back + spine + front + 0.25" Kindle: 1600 × 2560px (1:1.6)
STRIP IMAGES
Use COLOR versions (not BW) Square crops work best 8-12 images recommended 2K+ resolution preferred
LINE WEIGHT SPEC
Bold, medium-weight lines No crosshatching or stippling Fingernail-sized spaces minimum 20% breathing room for markers