png-unique-colors

``` const pngUniqueColors = require('png-unique-colors') const colors = await pngUniqueColors('path/to/image.png') // buffer also available // 79766 ```

Usage no npm install needed!

<script type="module">
  import pngUniqueColors from 'https://cdn.skypack.dev/png-unique-colors';
</script>

README

JavaScript module to count unique colors of PNG image.

Usage

const pngUniqueColors = require('png-unique-colors')
const colors = await pngUniqueColors('path/to/image.png') // buffer also available
// 79766

It is same as ImageMagick identify command output.

identify -verbose -unique path/to/image.png | grep Colors:
# Colors: 79766