pngquant imagemin plugin
$ npm install --save imagemin-pngquant
const imagemin = require('imagemin');
const imageminPngquant = require('imagemin-pngquant');
imagemin(['images/*.png'], 'build/images', {use: [imageminPngquant()]}).then(() => {
console.log('Images optimized');
});Returns a promise for a buffer.
Type: number, boolean
Default: 0.5
Controls level of dithering (0 = none, 1 = full).
Type: boolean
Default: false
Disable Floyd-Steinberg dithering.
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).
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.
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.
Type: boolean
Default: false
Print verbose status messages.
Type: buffer
Buffer to optimize.
MIT © imagemin