Load time
How long it takes for your website to finish loading completely.
Page weight
The amount of data on a page. Large images can account for much of what a visitor downloads.
Requests
The number of file requests needed to display a page.
First contentful paint
The first point when a visitor can see content on screen.
Largest contentful paint
How long it takes the largest visible element to render.
Layout stability
Unexpected shifts in content can make a page frustrating to use.