Check if a page is mobile friendly: viewport, text size, layout and more.
The mobile-friendly checker loads a page as a phone does and checks what makes a site easy to use on a small screen: the viewport meta tag, a responsive layout with CSS media queries, readable text sizes, no elements wider than the screen and no plugins such as Flash.
Google indexes the mobile version of websites first, so a page that works badly on phones loses rankings and visitors. Google retired its own Mobile-Friendly Test in 2023; this tool covers the same essentials.
Present, device-width, initial-scale and zoom.
Looks for media queries and responsive frameworks.
Finds fixed widths and images wider than a phone.
Counts font sizes under 12px.
A viewport tag with width=device-width, a layout that adapts to the screen, readable text without zooming and tap targets that are easy to hit.
Yes: Google uses mobile-first indexing and page experience signals.
Google retired it in December 2023 and recommends Lighthouse. This tool checks the same basics in one click.