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Table of Contents

  • Webpack Encore
  • Encore Documentation
    • Getting Started
    • Adding more Features
    • Optimizing
    • Guides
    • Issues & Questions
    • Full API
  • Assetic
  • Other Front-End Articles

Managing CSS and JavaScript

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Warning: You are browsing the documentation for Symfony 3.3, which is no longer maintained.

Read the updated version of this page for Symfony 6.2 (the current stable version).

Managing CSS and JavaScript

Symfony ships with a pure-JavaScript library - called Webpack Encore - that makes working with CSS and JavaScript a joy. You can use it, use something else, or just create static CSS and JS files in your web/ directory and include them in your templates.

Webpack Encore

Webpack Encore is a simpler way to integrate Webpack into your application. It wraps Webpack, giving you a clean & powerful API for bundling JavaScript modules, pre-processing CSS & JS and compiling and minifying assets. Encore gives you professional asset system that's a delight to use.

Encore is inspired by Webpacker and Mix, but stays in the spirit of Webpack: using its features, concepts and naming conventions for a familiar feel. It aims to solve the most common Webpack use cases.

Tip

Encore is made by Symfony and works beautifully in Symfony applications. But it can easily be used in any application... in any language!

Encore Documentation

Getting Started

  • Installation
  • First Example

Adding more Features

  • CSS Preprocessors: Sass, LESS, etc
  • PostCSS and autoprefixing
  • Enabling React.js
  • Enabling Vue.js (vue-loader)
  • Configuring Babel
  • Source maps
  • Enabling TypeScript (ts-loader)

Optimizing

  • Versioning (and the manifest.json file)
  • Using A CDN
  • Creating a "Shared" entry for re-used modules

Guides

  • Using Bootstrap CSS & JS
  • Creating Page-Specific CSS/JS
  • jQuery and Legacy Applications
  • Passing Information from Twig to JavaScript
  • webpack-dev-server and Hot Module Replacement (HMR)
  • Adding custom loaders & plugins
  • Advanced Webpack Configuration

Issues & Questions

  • FAQ & Common Issues
  • Encore Versus Assetic?

Full API

  • Full API: https://github.com/symfony/webpack-encore/blob/master/index.js

Assetic

Assetic is a pure PHP library that helps to process & optimize your assets (similar to Encore). Even though we recommend using Encore, Assetic still works great. For a comparison, see Encore Versus Assetic?.

For more about Assetic, see Assetic.

Other Front-End Articles

  • Assetic
  • How to Apply an Assetic Filter to a specific File Extension
  • How to Use Assetic for Asset Management
  • How to Use Assetic for Image Optimization with Twig Functions
  • Combining, Compiling and Minimizing Web Assets with PHP Libraries
  • How to Minify CSS/JS Files (Using UglifyJS and UglifyCSS)
  • How to Minify JavaScripts and Stylesheets with YUI Compressor
  • How to Use a Custom Version Strategy for Assets
  • Advanced Webpack Config
  • Configuring Babel
  • Using Bootstrap CSS & JS
  • Using a CDN
  • CSS Preprocessors: Sass, LESS, etc.
  • Adding Custom Loaders & Plugins
  • Using webpack-dev-server and HMR
  • FAQ and Common Issues
  • Encore Installation
  • jQuery and Legacy Applications
  • Creating Page-Specific CSS/JS
  • PostCSS and autoprefixing (postcss-loader)
  • Enabling React.js
  • Passing Information from Twig to JavaScript
  • Creating a Shared Commons Entry
  • First Example
  • Enabling Source Maps
  • Enabling TypeScript (ts-loader)
  • Asset Versioning
  • Encore Versus Assetic?
  • Enabling Vue.js (vue-loader)
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