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Node-Zopfli plugin for Webpack.


npm i -D zopfli-webpack-plugin


var ZopfliPlugin = require("zopfli-webpack-plugin");
module.exports = {
    plugins: [
        new ZopfliPlugin({
            asset: "[path].gz[query]",
            algorithm: "zopfli",
            test: /\.(js|html)$/,
            threshold: 10240,
            minRatio: 0.8


  • asset: The target asset name. [file] is replaced with the original asset. [path] is replaced with the path of the original asset and [query] with the query. Defaults to "[path].gz[query]".
  • filename: A function(asset) which receives the asset name (after processing asset option) and returns the new asset name. Defaults to false.
  • algorithm: Can be a function(buf, callback) or a string. For a string the algorithm is taken from zopfli.
  • test: All assets matching this RegExp are processed. Defaults to every asset.
  • threshold: Only assets bigger than this size are processed. In bytes. Defaults to 0.
  • minRatio: Only assets that compress better that this ratio are processed. Defaults to 0.8.
  • deleteOriginalAssets: Whether to delete the original assets or not. Defaults to false.

Option Arguments

  • verbose: Default: false,
  • verbose_more: Default: false,
  • numiterations: Default: 15,
  • blocksplitting: Default: true,
  • blocksplittinglast: Default: false,
  • blocksplittingmax: Default: 15


Juho Vepsäläinen

Joshua Wiens

Kees Kluskens

Sean Larkin