Image

Pixelate

pixelate() replaces regions with averaged square blocks.

Example

Source 32-pixel blocks
Landscape source Pixelated image 
<?php

use Alto\Image\Image;

Image::open('source-landscape.png')
    ->pixelate(32)
    ->save('pixelate.png');

Options

Option Default Use
size 8 Block size in pixels

Edge cases

  • Block size must be at least 2.
  • A block larger than the image can reduce it to one colour region.
  • Dimensions and alpha do not change.
  • Pixelate after resizing for a stable apparent block size.

Driver support

GD and Imagick support pixelate() exactly.