title: Webpack loaders vs plugins; what's the difference?
body: <p>What is the difference between loaders and plugins in webpack? </p>
  
  <p>The <a href="https://webpack.github.io/docs/using-plugins.html">documentation for plugins</a> just says:</p>
  
  <blockquote>
    <p>Use plugins to add functionality typically related to bundles in webpack.</p>
  </blockquote>
  
  <p>I know that babel uses a loader for jsx/es2015 transforms, but it looks like other common tasks (copy-webpack-plugin, for example) use plugins instead.</p>