Mobile usability refers to how easily visitors can navigate, read, and interact with a website on a mobile device, covering factors like text readability without zooming, appropriately sized tap targets, and content that fits the screen without horizontal scrolling.
Given that most searches now happen on mobile devices, and Google indexes primarily using the mobile version of a site, mobile usability issues can directly suppress both rankings and conversions simultaneously.
Common mobile usability problems include tap targets placed too close together, text too small to read without zooming, and content wider than the screen, all of which Google Search Console’s Mobile Usability report can help identify.
Mobile usability is checked as part of every Technical SEO audit we run.