You can turn a photograph into a paint by numbers template for free, in about ten minutes. The software is the easy part. Getting the template onto something you can actually paint, and matching real paint to the colors on screen, is where the do-it-yourself route gets difficult.
This page walks through the whole process honestly, including the steps most guides skip.
What the conversion actually does
It helps to know what the software is doing, because it explains why the result looks the way it does.
A photograph contains millions of distinct colors. The converter reduces that to a handful, a process called color quantization, then finds every contiguous area that ended up the same color and draws an outline around it. Each region gets a number keyed to the reduced palette. That is the whole trick.
Nothing is being vectorized and nothing is being intelligently simplified. The software has no idea that one region is a face and another is a sky. It is sorting pixels by color. That is why gradients, which contain no hard color boundaries at all, come out as bands, and why detailed textures like foliage or hair explode into hundreds of unpaintable specks.
Choosing the image, which decides everything
The photograph you feed in determines the result far more than any setting. What works:
- Strong, simple shapes. A building, a boat, a single animal against a plain background. Anything you could describe in one sentence.
- Clear separation between light and shadow. A photograph taken in flat, overcast light has no structure for the software to find, and comes back as mush.
- High resolution. A small image gives jagged, unusable region edges when enlarged to canvas size.
- Matching proportions. Crop the photo to the shape of your intended canvas before converting, or the software will hand you a template that does not fit.
What does not work, reliably: group photographs, anything shot at a distance, busy backgrounds, fine foliage, and most photographs of pets with long fur. If your subject only reads because of texture rather than shape, the conversion will lose it.
Picking the palette
Most converters ask you to click points on the image to build the palette. Six to twelve colors is the working range, including black, white and a mid gray.
Fewer than six and the picture flattens into poster shapes. More than twelve and two problems arrive together: you get a template with hundreds of small regions, and you have to source and buy that many specific paints. Twelve is more work than it sounds.
Save the palette. You will need those color values when you are standing in front of a shelf of acrylics trying to match them.
Getting it onto a paintable surface
This is the step that defeats most people, and the one usually described in a single cheerful sentence. Home printers do not print on stretched canvas. Here are the options that genuinely work.
Inkjet-printable canvas sheets
The simplest route. These are canvas sheets with a coating that accepts inkjet ink, sold in letter size and sometimes 13 x 19. You print the template straight onto them. The limitation is size: you are painting something no bigger than a sheet of paper unless you own a wide-format printer.
Heavy matte paper
Print onto 200gsm or heavier matte paper and paint on that. Acrylic on heavy paper works perfectly well, and you can mount or frame it afterward. Lighter paper will cockle and buckle as the paint dries.
Gel medium transfer, with a caution
You can transfer a print onto canvas with acrylic gel medium, but not the way it is usually described. The reliable version needs a toner print from a laser printer, because inkjet ink dissolves. You print the image mirrored, because the transfer reverses it. You press it face-down into a wet coat of medium, let it cure completely, then wet the back and rub the paper fibers away with your fingers, which takes patience and removes some of the image with them.
What you should not do is glue the printout face-up onto the canvas and paint on top of the paper. That is decoupage, not transfer. The paper will wrinkle as the acrylic dries and the surface will never be flat again.
Matching the paint
Nobody warns about this and it is the real cost. Your template says color 7 is a particular blue-gray. No tube of paint is that blue-gray. You are either mixing it yourself, which defeats the point of painting by numbers, or buying a set broad enough that something comes close.
Two practical notes. Screen colors are lit from behind and paint is not, so everything mixes darker and duller than it looked. And a mixed color must be mixed in one batch large enough for every region using it, because you will not reproduce it exactly a week later.
What this actually saves
Being straightforward about it: the template is free and everything after it is not. A set of acrylics in enough colors, printable canvas or heavy paper, brushes, and a medium to seal the finished piece adds up to roughly what a made-to-order canvas costs, and you have spent an evening on preparation before painting anything.
The do-it-yourself route is genuinely worth it when the process is the point. If you want to understand how the conversion works, experiment with palettes, or make something at a size and shape nobody sells, do it yourself. It is a good afternoon.
It is worth less when you simply want the painting. A custom paint by numbers from your photo arrives with the image already converted by someone who has done it thousands of times, printed on pre-primed cotton canvas at 12 x 16, 16 x 20 or 18 x 24, with the paints premixed to match the numbers and vacuum-sealed so they do not dry out. We print them in the USA. The conversion work is the part you were going to find hardest, and it is the part you are actually paying for.
If you want to test the idea first, run your photograph through PBNify and look at the outlined version. Ten minutes will tell you whether your image survives the conversion, whichever route you then take.
Common questions
Which free software is best?
PBNify is the most widely used and needs no installation. We have a fuller comparison in our guide to paint by numbers software, and a walkthrough of the free route from photo to template.
Why does my template have hundreds of tiny regions?
Too many colors in the palette, or too much texture in the photograph. Reduce the palette first, and if that does not fix it, the image is too detailed for this treatment.
Should I paint light colors first or dark?
Light first is the more forgiving order. Dark acrylic covers a light color that has strayed over a line in a single coat, while light paint will not cover dark however many coats you give it. Finish every region of one color before opening the next.
Do I need to seal the finished painting?
Not strictly, but a matte or satin acrylic varnish protects the surface and evens out the patchy sheen you get where some colors dry glossier than others. Let the paint cure for several days first.
Can I do a portrait this way?
Faces are the hardest subject for automatic conversion, because skin is a continuous gradient and the software turns gradients into bands. A single face fairly close to the camera in strong side light is the version most likely to work. A group photograph almost never does.
