Question: Are FSE themes faster? If so, why? If not, why not, and what are you going to do about it?
Answer: Search engines like fast websites. We can run Core Web Vital measurements on a site before and after having an FSE theme applied and compare the results.
If the site’s not faster then we should try to something about it.
- Full Site Editing themes have a new way of delivering CSS so that it’s run Just In Time in the browser.
- Page Speed Insights can be used to measure the front end performance
- The server performance can also be measured.