A maintained, updated fork of imagemin-pngquant
Node 18+
ESM
Security and dependency updates
$ npm install imagemin-pngquant
Linux machines must have the following packages prior to install:
libpng-dev libimagequant-dev
sudo apt-get -y install libpng-dev libimagequant-dev
Macosx machines must have the following package prior to install:
libimagequant
brew install libimagequant
const imagemin = require('imagemin');
const imageminPngquant = require('imagemin-pngquant');
(async () => {
await imagemin(['images/*.png'], {
destination: 'build/images',
plugins: [
imageminPngquant()
]
});
console.log('Images optimized');
})();
Returns Promise<Buffer>
.
Type: object
Type: number
Default: 4
Values: 1
(brute-force) to 11
(fastest)
Speed 10
has 5% lower quality, but is about 8 times faster than the default. Speed 11
disables dithering and lowers compression level.
Type: boolean
Default: false
Remove optional metadata.
Type: Array<min: number, max: number>
Values: Array<0...1, 0...1>
Example: [0.3, 0.5]
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 1 (perfect), similar to JPEG.
Type: number | boolean
Default: 1
(full)
Values: 0...1
Set the dithering level using a fractional number between 0 (none) and 1 (full).
Pass in false
to disable dithering.
Type: number
Truncate number of least significant bits of color (per channel). Use this when image will be output on low-depth displays (e.g. 16-bit RGB). pngquant will make almost-opaque pixels fully opaque and will reduce amount of semi-transparent colors.
Type: boolean
Default: false
Print verbose status messages.
Type: Buffer | Stream
Buffer or stream to optimize.