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    imagemin-optipngpublic

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    optipng image-min plugin

    Install

    $ npm install --save imagemin-optipng

    Usage

    const imagemin = require('imagemin');
    const imageminOptipng = require('imagemin-optipng');
     
    imagemin(['images/*.png'], 'build/images', {use: [imageminOptipng()]}).then(() => {
        console.log('Images optimized');
    });

    API

    imageminOptipng([options])(buffer)

    Returns a Promise for a Buffer.

    options

    optimizationLevel

    Type: number
    Default: 3

    Select an optimization level between 0 and 7.

    The optimization level 0 enables a set of optimization operations that require minimal effort. There will be no changes to image attributes like bit depth or color type, and no recompression of existing IDAT datastreams. The optimization level 1 enables a single IDAT compression trial. The trial chosen is what. OptiPNG thinks it’s probably the most effective. The optimization levels 2 and higher enable multiple IDAT compression trials; the higher the level, the more trials.

    Level and trials:

    1. 1 trial
    2. 8 trials
    3. 16 trials
    4. 24 trials
    5. 48 trials
    6. 120 trials
    7. 240 trials
    bitDepthReduction

    Type: boolean
    Default: true

    Apply bit depth reduction.

    colorTypeReduction

    Type: boolean
    Default: true

    Apply color type reduction.

    paletteReduction

    Type: boolean
    Default: true

    Apply palette reduction.

    buffer

    Type: Buffer

    Buffer to optimize.

    License

    MIT © imagemin

    install

    npm i imagemin-optipng

    Downloadsweekly downloads

    317,551

    version

    5.2.1

    license

    MIT

    repository

    github.com

    last publish

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