BYTETOOLS

Low Poly Image Generator

Turn any photo into low poly triangle artwork using edge-aware point sampling, Delaunay triangulation and a choice of flat or blended triangle fills.

Drop a photo to turn it into low-poly artworkTriangulated in your browser — the photo is never uploaded

Choose a photo. Points are scattered across it — more of them where the edges are strongest — then joined into Delaunay triangles and filled with the average colour of the pixels underneath.

What is the Low Poly Image Generator?

The ByteTools Low Poly Image Generator rebuilds a photograph out of colored triangles. Candidate points are scattered across the picture with a bias toward strong edges, measured with a Sobel operator, so detail lands where the subject actually needs it.

  • Points sampled with a Sobel edge-magnitude bias plus a jittered grid
  • Bowyer-Watson Delaunay triangulation computed entirely in the browser
  • Flat one-color-per-triangle or smooth blended vertex fills
  • Detail slider from 40 to 3000 points with a live point and triangle count
  • Seeded scatter, so any result can be reproduced or reshuffled
  • Optional wireframe overlay and full-resolution PNG export

How to use the Low Poly Image Generator

  1. 1

    Drop a photo into the upload area, or click it to browse.

  2. 2

    Drag the detail slider to set the target number of points, from 40 up to 3000.

  3. 3

    Raise the edge bias so more points cluster along the strong edges of the subject.

  4. 4

    Choose a flat or smooth fill style, and reshuffle the seed until the composition looks right.

  5. 5

    Tick the wireframe box to inspect the mesh, then click Download PNG.

About the Low Poly Image Generator

The ByteTools Low Poly Image Generator rebuilds a photograph out of colored triangles. Candidate points are scattered across the picture with a bias toward strong edges, measured with a Sobel operator, so detail lands where the subject actually needs it. Those points are then joined into a Bowyer-Watson Delaunay triangulation and each triangle is filled from the pixels underneath it.

Two fill styles are available. Flat gives each triangle a single averaged color for the classic faceted poster look, while smooth blends the colors at each vertex for a softer, more painterly result. A wireframe overlay shows the mesh itself, and the seed control lets you reshuffle the point scatter until the composition works the way you want.

The whole pipeline runs 100% locally in your browser — edge detection, triangulation and rendering are all plain JavaScript on your device, and the photo is never uploaded to a server. The analysis runs at a reduced size for speed, but the triangles are drawn at your image's full resolution before the PNG is exported.

Frequently asked questions

What is low poly art?

Low poly art represents an image with a small number of flat polygons, usually triangles, each filled with a single color. It borrows the look of early real-time 3D graphics and works well for poster art, wallpapers and abstract profile pictures.

How many triangles should a low poly image have?

It depends on how recognisable you want the subject to stay. Portraits usually read well around 400 to 900 points with the edge bias above 60 per cent, while a bolder, more abstract poster effect comes from dropping below 200 points.

What does edge bias do in a low poly generator?

Edge bias controls how strongly the scattered points are pulled toward areas of high contrast, found using a Sobel edge filter. A high bias keeps outlines and facial features crisp, while a low bias spreads points evenly and gives a flatter, more uniform mosaic.

What is Delaunay triangulation?

Delaunay triangulation connects a set of points so that no point falls inside the circumcircle of any triangle, which maximises the smallest angle and avoids long thin slivers. That property is what makes the resulting mesh look balanced rather than stretched.

Is my photo uploaded to make the low poly version?

No. The edge detection, triangulation and rendering all run in JavaScript inside your browser, and no image data is ever sent over the network. The exported PNG is produced from the local canvas on your own device.

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