Less Data Doesn’t Mean a Lesser Experience
timkadlec.com

Tim Kadlec explores strategies for dealing with the Save-Data header without degrading the experience, because not every user that enables it will be aware of the potential consequences:

The possibilities are endless. If you treat data as a constraint in your design and development process, you’ll likely be able to brainstorm a large number of different ways to keep data usage to a minimum while still providing an excellent experience. Doing less doesn’t mean it has to feel broken.