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Painting by Numbers Tool

Your pet as a paint by numbers canvas

Dogs, cats and horses convert well — fur has natural contrast and shape. Upload a photo and see the pattern before you decide anything.

1. Canvas size
2. Colours

Free and unlimited · No account needed

A half-finished canvas of a dog on a wooden table: the head painted in browns, the rest still white with numbered outlines, next to a brush and two pots of brown paint.

For a pet photo

  • Get down to their eye level, not shooting from above
  • Daylight from a window, no flash
  • Head and shoulders filling the frame
  • 40x50 cm or bigger — fur needs the room

About animals

Fur survives the conversion better than skin does

Skin is a gradual gradient, and flat areas represent that badly. Fur is not: it has direction, contrast and texture, and all three come through. A dog at twenty-four colours already looks like that dog.

What decides it are the eyes. Those need several separate areas — iris, pupil, the light spot — and each of those has to be wide enough for a brush.

That is a matter of canvas size, not colour count. Crop closer, or go bigger.

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Two printed patterns of the same cat: the one made from a photo taken from above is flat and hard to read, the one made at eye level shows the ears, nose and eyes as clear separate areas.
Same cat, two photos. Shot from above on the left, at eye level on the right.

Why animals convert better than people

Skin is a gradual gradient, which flat areas represent badly. Fur is not: it has direction, contrast and texture, and all three survive the conversion. A dog at twenty-four colours already looks like that dog, where a face at twenty-four colours looks like a poster of a face.

The eyes decide it

What makes a pet portrait recognisable is the eyes, and those need several distinct areas — iris, pupil, the light spot, the shadow of the lid. Each of those has to be at least a couple of millimetres wide or no brush reaches them.

That is a matter of canvas size, not colour count. On a 30 by 40 with the whole animal in frame, the eyes are simply too small. Crop closer, or go bigger. For a dog or cat, 40 by 50 centimetres with the head filling the frame is the smallest size that works.

Dark fur

A black dog against a dark sofa is one shape to the generator, not two. If your pet is dark, photograph them against something light — a wall, a window, snow, a pale blanket. The separation has to exist in the photo before it can exist on the canvas.

The same goes for a white cat on a white duvet. It is not the colour that matters but the contrast with what is behind them.

Horses

Horses work well in profile or three-quarter view, where the line of the head and neck carries the image. A head-on shot flattens the whole face into one plane and loses that. Watch out for the background: a stable full of railings and buckets steals areas that the animal needs.

How many colours

Twenty-four for a bold, graphic result — good for a single-colour animal. Thirty-six for a coat with several tones, which is most dogs and tabby cats. Forty-eight only if the canvas is 50 by 70 or larger; below that the extra areas become too small to paint.

The full trade-off · Which photos work

Paint by numbers from a pet photo — frequently asked questions

Which photo of my pet works best?
One taken at eye level, in daylight, close enough that the head fills a good part of the frame. Photos shot from above turn the animal into a shapeless blob, and a flash flattens exactly the fur texture you want to keep.
Does it work for cats as well as dogs?
Both, and horses too. What matters is not the species but the coat: an animal with visible markings or several tones converts better than a solid black cat, where almost everything collapses into one dark area.
Can I try it with my own pet photo for free?
Yes. Upload the photo, pick a size and a colour count, and look at the full numbered pattern before you decide anything. The photo is processed in your own browser, so it never leaves your device unless you order.
What canvas size should I choose for a pet portrait?
40 by 50 centimetres is the smallest that keeps a face recognisable. Go to 50 by 70 for a long-haired animal, or if the whole body is in the frame rather than just the head.
Why does fur need a bigger canvas than a face?
Fur is detail spread over a large area, not a few sharp lines. On a small canvas those tufts shrink below the size the generator will keep, so they get merged into flat patches and the coat stops looking like fur.