pngquant image-min plugin

$ npm install --save imagemin-pngquant

var Imagemin = require('image-min');
var pngquant = require('imagemin-pngquant');

var imagemin = new Imagemin()
	.src('foo.png')
	.dest('foo-optimized.png')
	.use(pngquant({ quality: '65-80', speed: 4 }));

imagemin.optimize();

Type: Boolean
Default: true

Will skip compression if the destination image is larger than the source image.

Type: Number
Default: 0.5

Controls level of dithering (0 = none, 1 = full).

Type: Boolean
Default: false

Disable Floyd-Steinberg dithering.

Type: Number
Default: undefined

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
Default: undefined

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.

MIT © imagemin