# imagemin-pngquant [](https://travis-ci.org/imagemin/imagemin-pngquant) [](https://ci.appveyor.com/project/kevva/imagemin-pngquant)
> pngquant imagemin plugin
## Install
```
$ npm install --save imagemin-pngquant
```
## Usage
```js
const imagemin = require('imagemin');
const imageminPngquant = require('imagemin-pngquant');
imagemin(['images/*.png'], 'build/images', {use: [imageminPngquant()]}).then(() => {
console.log('Images optimized');
});
```
## API
### imageminPngquant([options])(buffer)
Returns a promise for a buffer.
#### options
##### floyd
Type: `number` `boolean`
Default: `0.5`
Controls level of dithering (0 = none, 1 = full).
##### nofs
Type: `boolean`
Default: `false`
Disable Floyd-Steinberg dithering.
##### posterize
Type: `number`
Reduce precision of the palette by number of bits. Use when the image will be
displayed on low-depth screens (e.g. 16-bit displays or compressed textures).
##### quality
Type: `string`
Instructs pngquant to use the least amount of colors required to meet or exceed
the max quality. If conversion results in quality below the min quality the
image won't be saved.
Min and max are numbers in range 0 (worst) to 100 (perfect), similar to JPEG.
##### speed
Type: `number`
Default: `3`
Speed/quality trade-off from `1` (brute-force) to `10` (fastest). Speed `10` has
5% lower quality, but is 8 times faster than the default.
##### verbose
Type: `boolean`
Default: `false`
Print verbose status messages.
#### buffer
Type: `Buffer`
Buffer to optimize.
## License
MIT © [imagemin](https://github.com/imagemin)