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HTML Webpack Plugin

Plugin that simplifies creation of HTML files to serve your bundles

Install

Webpack 5

  npm i --save-dev html-webpack-plugin@next
  yarn add --dev html-webpack-plugin@next

Webpack 4

  npm i --save-dev html-webpack-plugin
  yarn add --dev html-webpack-plugin

This is a webpack plugin that simplifies creation of HTML files to serve your webpack bundles. This is especially useful for webpack bundles that include a hash in the filename which changes every compilation. You can either let the plugin generate an HTML file for you, supply your own template using lodash templates or use your own loader.

Sponsors

Thanks for supporting the ongoing improvements to the html-webpack-plugin!

Zero Config

The html-webpack-plugin works without configuration.
It's a great addition to the ⚙️ webpack-config-plugins.

Plugins

The html-webpack-plugin provides hooks to extend it to your needs. There are already some really powerful plugins which can be integrated with zero configuration

Usage

The plugin will generate an HTML5 file for you that includes all your webpack bundles in the body using script tags. Just add the plugin to your webpack config as follows:

webpack.config.js

const HtmlWebpackPlugin = require('html-webpack-plugin')
module.exports = {
  entry: 'index.js',
  output: {
    path: __dirname + '/dist',
    filename: 'index_bundle.js'
  },
  plugins: [
    new HtmlWebpackPlugin()
  ]
}

This will generate a file dist/index.html containing the following

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Webpack App</title>
  </head>
  <body>
    <script src="index_bundle.js"></script>
  </body>
</html>

If you have multiple webpack entry points, they will all be included with script tags in the generated HTML.

If you have any CSS assets in webpack's output (for example, CSS extracted with the mini-css-extract-plugin) then these will be included with <link> tags in the HTML head.

If you have plugins that make use of it, html-webpack-plugin should be ordered first before any of the integrated Plugins.

Options

You can pass a hash of configuration options to html-webpack-plugin. Allowed values are as follows:

Name Type Default Description
title {String} Webpack App The title to use for the generated HTML document
filename {String} 'index.html' The file to write the HTML to. Defaults to index.html. You can specify a subdirectory here too (eg: assets/admin.html)
template {String} `` webpack relative or absolute path to the template. By default it will use src/index.ejs if it exists. Please see the docs for details
templateContent {string|Function|false} false Can be used instead of template to provide an inline template - please read the Writing Your Own Templates section
templateParameters {Boolean|Object|Function} false Allows to overwrite the parameters used in the template - see example
inject {Boolean|String} true true || 'head' || 'body' || false Inject all assets into the given template or templateContent. When passing true or 'body' all javascript resources will be placed at the bottom of the body element. 'head' will place the scripts in the head element - see the inject:false example
publicPath {String|'auto'} 'auto' The publicPath used for script and link tags
scriptLoading {'blocking'|'defer'} 'blocking' Modern browsers support non blocking javascript loading ('defer') to improve the page startup performance.
favicon {String} `` Adds the given favicon path to the output HTML
meta {Object} {} Allows to inject meta-tags. E.g. meta: {viewport: 'width=device-width, initial-scale=1, shrink-to-fit=no'}
base {Object|String|false} false Inject a base tag. E.g. base: "https://example.com/path/page.html
minify {Boolean|Object} true if mode is 'production', otherwise false Controls if and in what ways the output should be minified. See minification below for more details.
hash {Boolean} false If true then append a unique webpack compilation hash to all included scripts and CSS files. This is useful for cache busting
cache {Boolean} true Emit the file only if it was changed
showErrors {Boolean} true Errors details will be written into the HTML page
chunks {?} ? Allows you to add only some chunks (e.g only the unit-test chunk)
chunksSortMode {String|Function} auto Allows to control how chunks should be sorted before they are included to the HTML. Allowed values are 'none' | 'auto' | 'manual' | {Function}
excludeChunks {Array.<string>} `` Allows you to skip some chunks (e.g don't add the unit-test chunk)
xhtml {Boolean} false If true render the link tags as self-closing (XHTML compliant)

Here's an example webpack config illustrating how to use these options

webpack.config.js

{
  entry: 'index.js',
  output: {
    path: __dirname + '/dist',
    filename: 'index_bundle.js'
  },
  plugins: [
    new HtmlWebpackPlugin({
      title: 'My App',
      filename: 'assets/admin.html'
    })
  ]
}

Generating Multiple HTML Files

To generate more than one HTML file, declare the plugin more than once in your plugins array

webpack.config.js

{
  entry: 'index.js',
  output: {
    path: __dirname + '/dist',
    filename: 'index_bundle.js'
  },
  plugins: [
    new HtmlWebpackPlugin(), // Generates default index.html
    new HtmlWebpackPlugin({  // Also generate a test.html
      filename: 'test.html',
      template: 'src/assets/test.html'
    })
  ]
}

Writing Your Own Templates

If the default generated HTML doesn't meet your needs you can supply your own template. The easiest way is to use the template option and pass a custom HTML file. The html-webpack-plugin will automatically inject all necessary CSS, JS, manifest and favicon files into the markup.

Details of other template loaders are documented here.

plugins: [
  new HtmlWebpackPlugin({
    title: 'Custom template',
    // Load a custom template (lodash by default)
    template: 'index.html'
  })
]

index.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8"/>
    <title><%= htmlWebpackPlugin.options.title %></title>
  </head>
  <body>
  </body>
</html>

If you already have a template loader, you can use it to parse the template. Please note that this will also happen if you specify the html-loader and use .html file as template.

webpack.config.js

module: {
  loaders: [
    { test: /\.hbs$/, loader: "handlebars-loader" }
  ]
},
plugins: [
  new HtmlWebpackPlugin({
    title: 'Custom template using Handlebars',
    template: 'index.hbs'
  })
]

You can use the lodash syntax out of the box. If the inject feature doesn't fit your needs and you want full control over the asset placement use the default template of the html-webpack-template project as a starting point for writing your own.

The following variables are available in the template by default (you can extend them using the templateParameters option):

  • htmlWebpackPlugin: data specific to this plugin

    • htmlWebpackPlugin.options: the options hash that was passed to the plugin. In addition to the options actually used by this plugin, you can use this hash to pass arbitrary data through to your template.

    • htmlWebpackPlugin.tags: the prepared headTag

Last updated Popular

v4.5.0

Install

npm install html-webpack-plugin
yarn add html-webpack-plugin

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Contributors

  • jantimon