https://csswizardry.com/2017/02/base64-encoding-and-performance
https://csswizardry.com/2017/02/base64-encoding-and-performance-part-2
https://csswizardry.com/2017/02/base64-encoding-and-performance
https://csswizardry.com/2017/02/base64-encoding-and-performance-part-2