A mobile-friendly test checks whether your site works well on phones: does it use a responsive viewport, are tap targets big enough, is text readable without zooming, and does anything overflow the screen?
Since Google indexes the mobile version of your site first, mobile problems directly affect your rankings. This free test shows exactly what's wrong on small screens.
More than half of all web traffic is on phones, and Google indexes the mobile version of your site first. That means your mobile experience isn't a nice-to-have — it's the version that determines both your rankings and most of your conversions.
This test checks the concrete, technical signals that make a page work on small screens, so you're not relying on how it happens to look on your own device.
Even a responsive theme can develop mobile issues once you add plugins, custom CSS, wide tables, large images or embedded content. Buttons end up too close together, fixed-width elements force horizontal scroll, and heavy assets make mobile painfully slow.
The test flags exactly which of these are happening on your page, with the specific elements involved, so you can fix them rather than guessing.
Make sure your viewport tag is present, give tap targets adequate size and spacing, use responsive images with proper dimensions, and avoid fixed widths that don't fit small screens. Test forms and menus with a thumb, not a mouse.
Because Google ranks on the mobile experience, fixing these issues improves both usability and search visibility at once — then re-run the test to confirm.
Google predominantly uses the mobile version of your site for indexing and ranking, so mobile issues can lower your visibility everywhere.
A responsive viewport, readable text, adequately sized and spaced tap targets, no horizontal scroll, and fast mobile loading.
Buttons and links that are too small or close together are hard to tap accurately, frustrating users and hurting conversions.
It's a great start, but plugins, custom code and heavy images can still cause mobile issues — which this test catches.
No — Google uses mobile-first indexing, meaning it primarily uses your mobile version to rank you for all devices. A weak mobile experience lowers your rankings everywhere.
Yes. Your phone is one device on a fast connection. This test checks the technical signals (viewport, tap targets, overflow) across conditions, catching issues you won't notice on your own screen.