aleksey-t/url-loader

A loader for webpack which transforms files into base64 URIs

url-loader

A loader for webpack which transforms files into base64 URIs.

Requirements

This module requires a minimum of Node v6.9.0 and Webpack v4.0.0.

Getting Started

To begin, you'll need to install url-loader:

$ npm install url-loader --save-dev

url-loader works like file-loader, but can return a DataURL if the file is smaller than a byte limit.

import img from './image.png'

// webpack.config.js
module.exports = {
  module: {
    rules: [
      {
        test: /\.(png|jpg|gif)$/i,
        use: [
          {
            loader: 'url-loader',
            options: {
              limit: 8192
            }
          }
        ]
      }
    ]
  }
}

And run webpack via your preferred method.

Options

fallback

Type: String Default: 'file-loader'

Specifies an alternative loader to use when a target file's size exceeds the limit set in the limit option.

// webpack.config.js
{
  loader: 'url-loader',
  options: {
    fallback: 'responsive-loader'
  }
}

The fallback loader will receive the same configuration options as url-loader.

For example, to set the quality option of a responsive-loader above use:

{
  loader: 'url-loader',
  options: {
    fallback: 'responsive-loader',
    quality: 85
  }
}

limit

Type: Number Default: undefined

A Number specifying the maximum size of a file in bytes. If the file is greater than the limit, file-loader is used by default and all query parameters are passed to it. Using an alternative to file-loader is enabled via the fallback option.

The limit can be specified via loader options and defaults to no limit.

// webpack.config.js
{
  loader: 'url-loader',
  options: {
    limit: 8192
  }
}

mimetype

Type: String Default: (file extension)

Sets the MIME type for the file to be transformed. If unspecified the file extensions will be used to lookup the MIME type.

// webpack.config.js
{
  loader: 'url-loader',
  options: {
    mimetype: 'image/png'
  }
}

Contributing

Please take a moment to read our contributing guidelines if you haven't yet done so.

CONTRIBUTING

License

MIT