analyze and characterize your critical path: number of resources, bytes, length.
optimize the number of critical bytes to reduce the download time (number of roundtrips)
minimize number of critical resources: eliminate them, defer their download, mark them as async, and so on
optimize the order in which the remaining critical resources are loaded: download all critical assets as early as possible to shorten the critical path length.
- How many times per second do most devices refresh their screens?
- Google Optimize does NOT currently allow you to: