How is this different from regular pixelation?

Regular pixelation averages square blocks. This tool averages hexagonal cells arranged in a honeycomb pattern, producing angled, tessellated facets instead of straight square blocks.

What does hex size control?

Hex size is the hexagon's center-to-vertex radius in pixels; larger values produce bigger, more abstract hexagonal facets, while smaller values keep more of the original detail.

Does the image size change?

No, the output stays exactly the same width and height as the source; only the pixel colors within each hex cell are averaged.

Is the alpha channel included in the averaging?

Yes, each cell's alpha is averaged the same way its color channels are, so partially-transparent source regions produce partially-transparent hex cells.

PNG Hexagonalizer - Honeycomb Mosaic Effect for Images

Overview

Introduction

This tool applies a honeycomb hexagonal mosaic effect to a PNG, computed entirely client-side.

It's a stylized alternative to square pixelation, producing angled hex-shaped color facets instead of straight blocks.

What Is PNG Hexagonalizer?

A hexagonal mosaic generator that lays a flat-top hex grid over the image, assigns every pixel to its nearest hex cell center, and repaints all pixels in a cell with that cell's average color.

The result resembles stained glass or a honeycomb pattern built from the source image's own colors.

How PNG Hexagonalizer Works

For every pixel, the tool searches a small neighborhood of candidate hex centers (accounting for the zig-zag vertical offset between columns in a hex grid) and picks whichever center is actually closest by Euclidean distance.

It then accumulates each hex cell's total color and alpha, computes the average, and paints every pixel belonging to that cell with the averaged result.

When To Use PNG Hexagonalizer

Use it to create a stylized honeycomb or stained-glass-style rendition of a photo or graphic.

It's also a fun way to generate abstract textures or backgrounds derived from an existing image's color palette.

Often used alongside PNG Triangulator and PNG Vignette Effect Adder.

Features

Advantages

Runs entirely client-side; your image never leaves the browser.
Produces a genuinely hexagonal tessellation rather than just relabeling square pixelation.
Adjustable hex size for anything from subtle faceting to bold abstract mosaics.

Limitations

Very small hex sizes on large images require checking many pixels' nearest-hex-center, which can take a moment to compute.
Hex cells at the image's edges are partial (clipped by the canvas bounds), so their average is computed only from the pixels that actually fall within the image.

Examples

Subtle honeycomb texture

Input

A 400x400 PNG photo, hex size 6

Output

A 400x400 PNG with fine hexagonal faceting that still reads clearly as the original photo

A small hex size preserves most recognizable detail while adding a honeycomb texture.

Bold abstract mosaic

Input

A 400x400 PNG photo, hex size 30

Output

A 400x400 PNG reduced to large, clearly-visible hexagonal color blocks

A larger hex size trades detail for a bold, abstract stained-glass look.

Best Practices & Notes

Best Practices

Start with a moderate hex size and adjust based on how abstract you want the result to look.
Higher-contrast source images tend to show the hexagonal tessellation pattern more clearly.

Developer Notes

The pure hexagon-grid math lives in a lib function operating on a plain Uint8ClampedArray pixel buffer with no DOM dependency, using a bounded local search over candidate hex centers per pixel (rather than a closed-form cube-coordinate rounding formula) to correctly handle the grid's column zig-zag offset.

PNG Hexagonalizer Use Cases

Creating a stained-glass or honeycomb-style photo effect
Generating abstract hexagonal textures for design projects
Producing a stylized, tessellated rendition of a logo or icon

Common Mistakes

Expecting straight block edges like square pixelation — the cells here are genuinely hexagonal with angled boundaries.
Using an extremely small hex size on a very large image and being surprised at the processing time.

Tips

Combine with the triangulator tool to compare hexagonal versus triangular low-poly styles on the same source image.
Try a large hex size for a bold poster-style graphic, or a small one for a subtle textured finish.

PNG Hexagonalizer