# imagemin-pngquant [![Build Status](https://travis-ci.org/imagemin/imagemin-pngquant.svg?branch=master)](https://travis-ci.org/imagemin/imagemin-pngquant) [![Build status](https://ci.appveyor.com/api/projects/status/w60auppnbiwgu9gj?svg=true)](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)