OpenColor

First you upload or describe. Type a prompt for a scene or character, upload a photo you want turned into a coloring page, start from a rough sketch, or enter letters, a name or a number for a personalised page. You can ask for bolder, simpler lines or finer detail depending on who will be coloring it.

Next the AI draws the lines. OpenColor turns your input into black-and-white line art, using one of several models (V2, V2.5, V3 and V3.1, with V3 Pro on higher plans), and you can refine parts of a page with AI region edit in the editor on Hobby and above. Generations draw from your monthly credits, at roughly one credit per page, and 2K and 4K output adds a small per-image credit cost that is shown before you generate.

Finally you print and colour. Download high-resolution pages and print them at home or in class, or gather them into a coloring book and export it for Amazon KDP, as an Etsy printable, or as a digital PDF for tablets and home printing. Print-ready 300 DPI files are available on a pay-per-page basis.

• •Text to Coloring Pages - Describe any scene, character or moment in words and OpenColor turns it into a printable coloring page in seconds.
• •Photo to Coloring Pages - Upload a photo and the AI traces its outlines into bold, colorable line art; the site recommends sharp, well-lit pictures with one clear subject, such as selfies, pets, flowers or simple scenes.
• •Sketch Enhance - Start with a simple drawing and the AI adds detail to turn it into a complete coloring page.
• •Letters, Words and Names - Create personalised pages featuring letters, words, names and numbers, useful for learning activities and gifts.
• •Consistent Characters and Batches - Save your own characters and reference images in a library so they look the same across pages, and generate a stack of pages at once for party packs or classrooms, with batch generation from the Hobby plan.
• •Coloring Book Builder - Bundle pages into a book with AI front and back covers and special pages, then export for Amazon KDP, as an Etsy printable, or as a digital PDF, with 4K output and HD upscale on Artist and yearly Hobby plans and above.

Parents can make personalised pages on whatever their children are into that week, and turn family photos into coloring pages for birthdays, holidays and other occasions. Teachers can produce classroom worksheets and activity sheets in minutes, including letter and number pages for younger learners.

KDP and Etsy sellers are the clearest fit for the paid plans: OpenColor can produce unique pages in volume, keep characters consistent across a book, generate covers and export files formatted for Amazon KDP, with commercial rights on the Artist plan monthly or Hobby yearly and above. Adult colorists who want more intricate designs can raise the line detail, and anyone who only needs a handful of pages can try the free starting credits or buy a one-time credit pack instead of subscribing.