Your screen sizes report shows the width of the screens used by your website visitors. It’s useful to understand whether to optimize more for mobile or desktop visitors:
Visitors are categorized into one of four categories based on their device width:
Desktop (above 1440px)
Laptop (992px to 1440px)
Tablet (576px to 992px)
Mobile (up to 576px)
For the most accurate reporting, we use
window.innerWidth to collect the screen size. It measures the width of the browser window where your website is actually rendered, rather than the full screen width.