The three#
- Largest Contentful Paint: when the main content has loaded. Good is within 2.5 seconds.
- Interaction to Next Paint: how fast the page responds to a tap or click. Good is 200 milliseconds or less.
- Cumulative Layout Shift: how much the layout jumps. Good is 0.1 or less.
Those thresholds are from web.dev's Web Vitals page, linked below.
Where they matter#
Google's Core Web Vitals page highly recommends good scores for success with Search, and says they align with what its core ranking systems seek to reward. A fast page with a poor answer still loses.
Read yours#
The Core Web Vitals report in Search Console groups your pages by status. Start with the page templates that carry the most traffic.
Which pages are slow on phones?
Four product pages load their main image late. They share one template.
See it on your own site#
The free website check reads a site you name and reports what holds its pages back, with no account and no card. It changes nothing on your site.