fontmin-webpack
Minifies icon fonts to just what is used.
# 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@^1.0.2How 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
fontminto minify the TrueType font to only the used glyphs - Converts the ttf back to all other formats (supports
ttf,eot,svg,woff, andwoff2although you should really only need to care about 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
@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
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
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
"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)