Online Tool Store
Low-Poly Image Generator
Upload an image and convert it into stylized low-poly triangle art by sampling edge points and triangulating them, with adjustable detail level.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Sample gradient shown below — choose your own image to replace it. Files never leave your browser.
Source
Low-poly result
How it works
- Choose an image — a sample gradient is generated and processed automatically so you can see the effect immediately.
- Adjust Detail and Jitter to control the size and irregularity of the triangular mesh.
- Click "Regenerate mesh" for a different random pattern at the same settings, then download the result as a PNG.
The method
For each grid cell, two triangles are drawn between its four jittered corner points. Each triangle's fill color is read directly from the source image at the triangle's centroid — the average of its three corners' coordinates — so every facet is a single flat color sampled from the photo underneath it.
FAQ
How does the low-poly effect actually work?
The image is divided into a grid of cells, each split into two triangles. Every triangle's corner points are randomly nudged ("jittered") to break up the perfect grid, then each triangle is filled with the single color sampled from the original image at that triangle's center — the classic faceted low-poly look.
Can I control how chunky the effect looks?
Yes — the "Detail" slider sets how many grid cells span the image (more cells = smaller, more numerous triangles = closer to the original photo), and "Jitter" controls how irregular the triangle edges are, from a clean diagonal grid at 0 to quite chaotic at 1.
What image formats are supported?
PNG, JPEG, and WebP uploads. The result always downloads as a PNG so the flat-color triangles stay crisp — JPEG re-compression would introduce unwanted gradient noise along the triangle edges.
How we compare
| Feature | Online Tool Store | Photoshop mosaic/facet filter | Dedicated low-poly generator app |
|---|---|---|---|
| No install, runs in the browser | ✓ | ✗ | ✗ |
| Adjustable jitter (mesh irregularity) | ✓ | ✗ | ✓ |
| Free, no watermark | ✓ | ✗ | ✗ |
If you want the faceted low-poly look for a wallpaper or poster background without installing an app or fighting a Photoshop filter's default settings, this gives you two sliders and an instant PNG.