JavaScript: Optimizing Web Performance using Resource Hints

This video provides three simple changes to improve a Web app's loading speed. The first change is to use 'preload' to fetch crucial resources like CSS or JavaScript files as soon as possible. The 'prefetch' technique is suggested for loading resources needed in future navigations with low priority, and 'preconnect' is recommended to set up early connections with third-party servers, such as APIs. Implementing these resource hints can lead to faster webpage load times.