It’s easier than ever to create responsive websites with WordPress since the addition of native handling for responsive images in core as of the WordPress 4.4 Clifford release. Understand why it is important to provide users with images that are appropriate for their screen size and learn what happens to images behind the scenes. This is a technical talk that will deep dive into how you can take advantage of responsive images in your sites.
- Introduction to responsive design
- Why responsive imagers are important
- How does WordPress implement responsive images
- Overview of the scrset and sizes attributes
- New functions and hooks as of 4.4
- New default size – medium large
- Customizing responsive markup
- Additional responsive plugins
- Closing remarks and summary
https://make.wordpress.org/core/2015/11/10/responsive-images-in-wordpress-4-4/
https://wordpress.org/plugins/ricg-responsive-images/
http://alistapart.com/article/responsive-images-in-practice