Last updated 07-24-2026
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Colorin
Colorin is a web platform for creating custom coloring books from text prompts, photos, or locked characters. You brainstorm page ideas in batch, generate many pages at once in a consistent style, and export print-ready PDFs sized for home printing or Amazon KDP and Etsy listings.
Most coloring tools stop at single pages. Colorin is built around full book workflows: its ideas generator turns a theme into dozens of page concepts you can select and send to batch generation, and character lock keeps the same character across every page while scenes change.
The platform offers six art styles (Cartoon, Kawaii, Storybook, Minimalist, Intricate, and Zentangle), built-in page editing, cover design, and KDP-ready trim sizes with margin presets. Parents, teachers, and independent publishers use it to make personalized activity books or sell commercial titles without juggling separate design tools.
Brainstorm up to 1,500 coloring ideas per month from any theme
Generate up to 50 pages in a single batch run on higher plans
Lock a character so it stays consistent across every page in a book
Turn JPG, PNG, or WebP photos into clean line art in four styles
Export KDP-ready PDFs in trim sizes like 8.5??11", 8.5??8.5", 6??9", and A4
Edit pages with brush, pencil, eraser, and text tools plus prompt-based area replace
Start free with 8 watermark-free coloring pages and no credit card required
Built for full coloring book workflows with batch idea generation and page creation.
Character lock keeps the same character consistent across every page in a book.
All paid plans include a 100% commercial license for KDP, Etsy, and client work.
Exports KDP-ready PDFs with trim sizes and margin presets already applied.
Free signup includes 8 watermark-free pages with no credit card required.
Higher-tier batch limits and book library caps require upgrading from the Hobby plan.
Automatic margin tools and one-click coloring are limited or absent on the entry Hobby plan.
Browser-based only with no dedicated mobile app listed on the site.
Is Colorin free to use?
Yes. Colorin lets you sign up free and get 8 coloring pages with no watermark, plus access to over 100 free designs. No credit card is required to start. Paid plans add more monthly credits and commercial features.
Can I sell coloring books made with Colorin on KDP or Etsy?
Yes. All paid Colorin plans include a 100% commercial license. You can publish on Amazon KDP, sell on Etsy, or use pages in client work with no royalty splits or attribution required.
What art styles does Colorin offer?
Colorin offers six styles: Cartoon, Kawaii, Storybook, Minimalist, Intricate, and Zentangle. You pick a style before generating pages or books so the line art stays consistent across the project.
What is character lock in Colorin?
Character lock lets you upload or create a character and keep it looking the same across every page in a book. Colorin changes poses, expressions, or scenes while preserving the character's appearance.
What page sizes can I export from Colorin?
Colorin exports PDFs and PNGs in Letter (8.5??11"), A4, square, and KDP trim sizes including 8.5??8.5" and 6??9". Margin presets help pages print cleanly without manual reformatting.
Can I turn a photo into a coloring page with Colorin?
Yes. Colorin's photo tool accepts JPG, PNG, or WebP uploads and converts them into printable line art. You can choose Cartoon, Kawaii, Minimalist, or Storybook styles before downloading.
Do I need design skills to use Colorin?
No. Colorin handles generation, editing, formatting, and cover design in one workflow. You describe ideas in plain language or upload photos, then download print-ready files without using separate design software.