NUMRAWhere every number becomes art

Turn any image into a color-by-number puzzle.

Upload a photo or describe an idea. Numora finds clean regions, numbers them, mixes a matching palette and hands you print-ready pages.

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Numbered page · 24 colors · A4

One engine, two ways in

Bring your own photo or let the AI draw one. Either way it lands in the same processing pipeline and comes out as a numbered page, a color key and a colored preview that always match each other.

Color key
1Cream
2Sun yellow
3Amber
4Orange
5Rust
6Chestnut
7Cocoa
8Bark

From picture to printed page

Five steps, and only two of them need a decision from you.

  1. Bring an image

    Upload a photo, or describe what you want and let Numora draw it.

  2. Set the difficulty

    Choose detail level, how many colors, shape style and page size.

  3. Generate

    The engine builds regions, assigns numbers and mixes a matching palette.

  4. Refine

    Merge regions, recolor, move numbers until the page reads cleanly.

  5. Download

    Take the numbered page, color key and preview as PDF, PNG or ZIP.

What makes the pages worth printing

The interface is the easy part. The work is in the segmentation.

Smart regions

Boundaries follow the picture, not a grid. Tiny fragments merge automatically so every area is big enough to color.

Matched color key

Every number maps to one palette color, with names and hex codes for both screen and print.

Print ready

Vector-first rendering exports at 300 DPI on A4, Letter and KDP trim sizes with safe margins.

Built for sellers

Commercial licensing and page formats made for coloring books on KDP and Etsy.

Plans

Start free. Upgrade when you need commercial rights or larger exports.

Free

Try the engine

$0
  • 3 conversions a month
  • Up to 12 colors
  • PNG export
  • Numora watermark
Start free
Most popular

Creator

For regular makers

$19/month
  • 120 credits a month
  • AI image generation
  • Up to 24 colors
  • PDF and PNG export
  • Commercial rights
Choose Creator

Pro

For coloring-book sellers

$39/month
  • 400 credits a month
  • Up to 30 colors
  • KDP trim presets
  • Editable SVG export
  • Advanced editor
  • Priority processing
Choose Pro

Studio

For teams and agencies

$99/month
  • 1,500 credits a month
  • 5 team seats
  • White-label exports
  • Batch processing
  • API access
Talk to us

Questions

How many colors should I pick?

Twelve to sixteen suits children and quick projects. Twenty-four is the sweet spot for adult coloring books. Above that the regions get small and printing needs a finer stroke.

Can I sell what I make?

Creator, Pro and Studio plans include commercial rights for artwork you generate with Numora. You are still responsible for the rights to any image you upload yourself.

What comes in the download?

A numbered page, a color key with names and hex values, a colored preview, and a JSON file recording the settings used. Pro plans add editable SVG.

Will it work with Amazon KDP?

Yes. Pick a KDP trim size and Numora exports at 300 DPI with embedded fonts and safe margins, ready to drop into a book interior.