Colour by Number Studio

Turn colourful artwork into beautiful printable colouring pages.

How to use this app

  1. 1Add your artwork

    Click the upload box or drag in up to 8 coloured images (PNG, JPG or WebP, max 20 MB each).

  2. 2Pick your settings

    Choose KDP (8.5 Ă— 11 in) or A4 paper, how many colours to use, and the page style.

  3. 3Generate

    Click “Generate printable pages” and keep this tab open. Each image takes about a minute.

  4. 4Download & print

    Download the ZIP. It contains print-ready PDF and PNG pages at 300 DPI.

Tips: flat-colour designs with clear outlines on a white background give the best results. Use a desktop or laptop browser. The first run takes a little longer while the engine loads. Your images are processed on your own device and are never uploaded.

1. Add your artwork

2. Choose your settings

Uses the V2 Refined engine. A4 uses its original numbered-page layout. KDP includes the combined page with a coloured reference and a colour guide.

3. Generate & download

Processing runs on your own computer at 300 DPI and can take a minute or more per image. Keep this page open until the download appears. A desktop browser is recommended.