meta-viewport-large

Viewport meta tag should allow zooming up to 500%

manualconfidence: mediumseverity: minorperceivable

Checks that <meta name="viewport"> does not set user-scalable=no or maximum-scale below 5 (500%).

Applies to. Applies to <meta name="viewport"> elements that carry a non-empty content attribute.

Expectation. The content attribute does not set user-scalable to "no"/"0", and does not set maximum-scale below 5 (500%). This is the AAA-level, stricter counterpart of meta-viewport-zoom-enabled (which enforces the AA 200% minimum as a hard, WCAG-normative fail); this rule is advisory best-practice guidance toward the higher AAA bar.

Examples

can't tell

<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">

`user-scalable=no` blocks zooming past whatever scale the page loads at, short of the AAA 500% best-practice target.

n/a

<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=5">

`maximum-scale=5` (500%) already meets the best-practice ceiling this rule checks toward.

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