First Contentful Paint marks the time at which the first text or image is painted. Learn more.

Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More

Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn more.

Optimized images load faster and consume less cellular data. Learn more.

A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows. Learn more.

Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers. Learn more.

HTTP/2 offers many benefits over HTTP/1.1, including binary headers, multiplexing, and server push. Learn more.

If you’ve already set up HTTPS, make sure that you redirect all HTTP traffic to HTTPS in order to enable secure web features for all your users. Learn more.

Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.