Meta viewport checker

What is a Meta Viewport Checker?

The Meta Viewport Checker looks for a <meta name="viewport"> tag, which tells mobile browsers how to scale and size a page's content relative to the device's screen width.

Why the Viewport Tag Matters

• Mobile-friendliness — Without a viewport tag, mobile browsers render pages at a fixed desktop width and then shrink them, forcing users to pinch-zoom.
• Mobile-first indexing — Google predominantly uses the mobile version of a site for indexing and ranking, so a missing viewport tag can directly hurt rankings.
• Standard value — width=device-width, initial-scale=1 is the near-universal recommended setting for responsive sites.