P4 Authority signals

Mobile readiness

Mobile readiness checks the signs in your page's code that it is built for phones: a mobile viewport, zoom left enabled, no fixed widths wider than a phone and images that adapt to the screen. Phone readiness has long been part of how search engines judge pages.

At a glance

Ladder layer
P4 Authority signals
Is the page worth citing?
Where it is measured
Free check
Run the free check

Reading the result

What good looks like, and what a problem looks like.

Good

A mobile viewport, zoom enabled, a layout that fits a phone, and adaptive images.

Not measured

When this cannot be checked, the result says so and leaves it out of the score. Unknown is not zero.

Typical problems

  • No mobile viewport.
  • Zoom is disabled.
  • Elements wider than a phone screen.

What it cannot prove

  • It reads the code, not a real device. A page can pass and still be hard to use on a phone.

Sources and further reading