Free texture packer also released as webpack plugin. Supported multisources, hot reload, file system realtime watching.

Installation:

$ npm install webpack-free-tex-packer

Basic usage (webpack.config.js):

const path = require('path');
const WebpackFreeTexPacker = require('webpack-free-tex-packer');
 
module.exports = {
    entry: [
        './src/index',
        'webpack-dev-server/client?http://localhost:8080'
    ],
    output: {filename: 'index.js'},
    mode: 'development',
    plugins: [
        new WebpackFreeTexPacker(path.resolve(__dirname, 'atlases'))
    ]
};

Output:

http://localhost:8080/pack-result.png
http://localhost:8080/pack-result.json

Advanced usage (webpack.config.js):

const path = require('path');
const WebpackFreeTexPacker = require('webpack-free-tex-packer');
 
let sources = [];
sources.push(path.resolve(__dirname, 'atlases/10.png'));
sources.push(path.resolve(__dirname, 'atlases/11.png'));
sources.push(path.resolve(__dirname, 'atlases/12.png'));
sources.push(path.resolve(__dirname, 'atlases/dir1'));
sources.push(path.resolve(__dirname, 'atlases/dir2/.'));
 
let packOptions = {
    textureName: 'atlas',
    width: 512,
    height: 512,
    fixedSize: false,
    padding: 2,
    allowRotation: true,
    detectIdentical: true,
    allowTrim: true,
    exporter: "Pixi",
    removeFileExtension: false,
    prependFolderName: true
};
 
module.exports = {
    entry: [
        './src/index',
        'webpack-dev-server/client?http://localhost:8080'
    ],
    output: {filename: 'index.js'},
    mode: 'development',
    plugins: [
        new WebpackFreeTexPacker(sources, 'assets', packOptions)
    ]
};

Output:

http://localhost:8080/assets/atlas.png
http://localhost:8080/assets/atlas.json

Plugin arguments:

argument type description
sources String or Array Images or folders path. Folder path, ended by ('.', '*' or '*.*') includes images to atlas root.
output String Output folder
packOptions Object Pack options

Full options description

Custom exporters

Sources

Demo