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fontmin-webpack

(★ 137)

Minifies icon fonts to just the used glyphs.

File Explorer

Download Latest Version (.zip)

- - ci.yml
- index.js
- - custom-icon.css
  - custom-icon.js
  - entry-utf32.js
  - entry.css
  - entry.js
  - index.html
  - later.css
  - webpack.config.js
  - webpack.custom-icon.config.js
  - webpack.extract-text.config.js
  - webpack.unicode.config.js
- index.test.js
.gitignore
LICENSE
package.json
README.md
yarn.lock

# Installation Guide

1. Get the code

git clone https://github.com/patrickhulce/fontmin-webpack

Downloads the entire project code from GitHub to your computer.

cd fontmin-webpack

Moves into the project folder you just downloaded.

2. Node.js

Easy Recommended

Prerequisites

Git Needed to download the project code from GitHub.
Node.js Node.js must be installed to use npm. The LTS version is recommended.

npm install --save-dev fontmin-webpack

Downloads and installs the libraries listed in package.json.

npm install --save-dev fontmin-webpack@^2.0.1

Downloads and installs the libraries listed in package.json.

npm install --save-dev fontmin-webpack@^1.0.2

Downloads and installs the libraries listed in package.json.

✅ After running the command, open the address shown in the terminal (usually something like http://localhost:3000) in your browser.

Pulled directly from this repo's README.

// repository documentation

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# fontmin-webpack

[![NPM Package](https://badge.fury.io/js/fontmin-webpack.svg)](https://www.npmjs.com/package/fontmin-webpack)
[![Build Status](https://travis-ci.org/patrickhulce/fontmin-webpack.svg?branch=master)](https://travis-ci.org/patrickhulce/fontmin-webpack)
[![Coverage Status](https://coveralls.io/repos/github/patrickhulce/fontmin-webpack/badge.svg?branch=master)](https://coveralls.io/github/patrickhulce/fontmin-webpack?branch=master)
[![Commitizen friendly](https://img.shields.io/badge/commitizen-friendly-brightgreen.svg)](http://commitizen.github.io/cz-cli/)
[![Dependencies](https://david-dm.org/patrickhulce/fontmin-webpack.svg)](https://david-dm.org/patrickhulce/fontmin-webpack)

Minifies icon fonts to just what is used.

```bash
# for webpack 5
npm install --save-dev fontmin-webpack
# for webpack 4
npm install --save-dev fontmin-webpack@^2.0.1
# for webpack <=3
npm install --save-dev fontmin-webpack@^1.0.2
```

## How It Works

- Examines your webpack output assets to identify font formats that have the same name
- Identifies CSS rules that specify a content property and extracts unicode characters
- Uses `fontmin` to minify the TrueType font to only the used glyphs
- Converts the ttf back to all other formats (supports `ttf`, `eot`, `svg`, `woff`, and `woff2` although you should really only need to care about [woff](http://caniuse.com/#search=woff))
- Replaces the webpack output asset with the minified version

## Usage

#### Install fontmin-webpack

`npm install --save-dev fontmin-webpack`

#### Include Your Icon Font

The example below uses glyphs `\uf0c7` and `\uf0ce`

```css
@font-face {
  font-family: 'FontAwesome';
  src: url('fontawesome-webfont.eot') format('embedded-opentype'), url('fontawesome-webfont.woff2')
      format('woff2'), url('fontawesome-webfont.woff') format('woff'), url('fontawesome-webfont.ttf')
      format('ttf');
}

/**
 * Remove other unused icons from the file.
 */
.fa-save:before,
.fa-floppy-o:before {
  content: '\f0c7';
}
.fa-table:before {
  content: '\f0ce';
}
```

#### Setup Your Webpack Configuration

```js
const FontminPlugin = require('fontmin-webpack')

module.exports = {
  entry: 'my-entry.js',
  output: {
    // ...
  },
  plugins: [
    // ...
    new FontminPlugin({
      autodetect: true, // automatically pull unicode characters from CSS
      glyphs: ['\uf0c8' /* extra glyphs to include */],
      // note: these settings are mutually exclusive and allowedFilesRegex has priority over skippedFilesRegex
      allowedFilesRegex: null, // RegExp to only target specific fonts by their names
      skippedFilesRegex: null, // RegExp to skip specific fonts by their names
      textRegex: /\.(js|css|html)$/,  // RegExp for searching text reference
      webpackCompilationHook: 'thisCompilation', // Webpack compilation hook (for example PurgeCss webpack plugin use 'compilation' )
    }),
  ],
}
```

#### Use in Vue3

In a Vue3 project PurgeCss needs to be executed as a Webpack plugin. 
The easiest way to add Webpack plugins is to declare them in vue.config.js

This is a sample for a project with Vue3 / Tailwindcss 3 / Fontawesome 6
#### **`vue.config.js`**
```js
const webpackPlugins = [];
const __DEBUG__='0'; //turn to 1 for avoiding purgecss and fontmin

// **********************************
// Purgecss unused classes
//
if (__DEBUG__ !== '1') {
  const PurgecssPlugin = require('purgecss-webpack-plugin');
  const glob = require('glob-all')
  const purgeCssPlugin = new PurgecssPlugin({
    paths: glob.sync(
      [
        path.join(__dirname, './public/*.html'),
        path.join(__dirname, './src/**/*.vue'),
        path.join(__dirname, './src/**/*.js')
      ]),
    safelist: [/^sm:/, /^md:/, /^lg:/, /^xl:/, /^2xl:/, /^focus:/, /^hover:/, /^group-hover:/, /\[.*\]/, /^basicLightbox/, /\/[0-9]/, /^tns/],
    fontFace: true
  })
  webpackPlugins.push(purgeCssPlugin);
}

// **********************************
// fontminifying Fontawesome
//
if (__DEBUG__ !== '1') {
  const FontMinPlugin = require('fontmin-webpack');
  const fontMinPlugin = new FontMinPlugin({
    autodetect: true,
    glyphs: [],
    allowedFilesRegex: /^fa[srltdb]*-/, // RegExp to only target specific fonts by their names
    skippedFilesRegex: null, // RegExp to skip specific fonts by their names
    textRegex: /\.(js|css|html|vue)$/,  // RegExp for searching text reference
    webpackCompilationHook: 'compilation', // Webpack compilation hook (for example PurgeCss webpack plugin use 'compilation' )
  });
  webpackPlugins.push(fontMinPlugin);
}

module.exports = {
   runtimeCompiler: true,
   configureWebpack: {
    plugins: webpackPlugins,
    devtool: false,
    mode: 'production',
  },
};
```

Obviously the required dependencies must be added in package.json
#### **`package.json`**
```json
"devDependencies": {
…
    "fontmin-webpack": "^4.0.0",
    "glob-all": "^3.3.0",
    "purgecss-webpack-plugin": "^4.1.3",
    "webpack": "^5.71.0",
…
}
```

#### Save Bytes

**Before**

```
674f50d287a8c48dc19ba404d20fe713.eot     166 kB          [emitted]
912ec66d7572ff821749319396470bde.svg     444 kB          [emitted]  [big]
b06871f281fee6b241d60582ae9369b9.ttf     166 kB          [emitted]
af7ae505a9eed503f8b8e6982036873e.woff2  77.2 kB          [emitted]
fee66e712a8a08eef5805a46892932ad.woff     98 kB          [emitted]
```

**After**

```
674f50d287a8c48dc19ba404d20fe713.eot    2.82 kB          [emitted]
912ec66d7572ff821749319396470bde.svg    2.88 kB          [emitted]
b06871f281fee6b241d60582ae9369b9.ttf    2.64 kB          [emitted]
af7ae505a9eed503f8b8e6982036873e.woff2  1.01 kB          [emitted]
fee66e712a8a08eef5805a46892932ad.woff   2.72 kB          [emitted]
```

## Limitations

- Fonts must be loaded with `file-loader`
- Fonts must have the same name as the TrueType version of the font.
- Font file names are not changed by different used glyph sets ([See #8](https://github.com/patrickhulce/fontmin-webpack/issues/8))