What is Paint by Number Generator?
Paint by Number Generator converts any uploaded image into a numbered color template for hand-painting. It segments a photo or graphic into distinct color regions, assigns each region a number, and outputs a ready-to-print paint-by-number art template. The tool runs entirely in the browser. Images can be loaded by file browse or by pasting directly from the clipboard.
Features & Benefits
- Image Input — accept images via file browse or clipboard paste; resize automatically before processing to manage performance
- Color Quantization — reduce image colors to a defined count using k-means clustering across RGB, HSL, or Lab color space
- Cluster Precision Control — adjust precision and random seed to tune how color groups are calculated
- Color Restriction — limit clustering to a custom palette by specifying allowed RGB values
- Facet Building — detect and construct closed color regions from the quantized image
- Small Facet Pruning — remove facets below a pixel threshold, with order control (largest-to-smallest or smallest-to-largest)
- Maximum Facet Cap — set an upper limit on total facet count to control template complexity
- Border Detection & Segmentation — trace region outlines and segment border paths, with halving passes to reduce border complexity
- Label Placement — calculate optimal number positions inside each facet for clear, readable output
- SVG Render Options — toggle labels, fill colors, and borders independently; set SVG size multiplier and label font size and color
- SVG Export — download the finished paint-by-number art template as a scalable vector file
- PNG Export — download the output as a raster image
- Palette Export — download the numbered color palette as a separate reference file
- Processing Log — view a step-by-step log of each processing stage
Real-World Applications
Converting a photograph into a paint-by-number art template requires only the image already on hand. A travel photo can become a landscape painting template. A portrait can become a numbered face study ready for canvas transfer or home printing.
The color space setting affects how the tool groups similar tones. Lab color space may preserve perceptual differences between colors more accurately than RGB for images with subtle gradients. Switching between modes can produce a more faithful paint-by-number art template for complex source photos.
Facet pruning controls how detailed the final template becomes. Removing small facets simplifies the create paint-by-number art output, which suits large-print formats and beginners working with broader brushwork. Increasing the facet cap preserves finer detail, useful for high-resolution source images where accuracy matters.
The SVG output keeps the paint-by-number art template fully scalable for any print size without quality loss. The separate palette download provides a numbered color reference that stays linked to the template regions. Both files together give everything needed to reproduce the source image as a hand-painted work.
