Success Criterion 1.4.4
Conformance level AA

Viewport Meta Tag That Disables Pinch-to-Zoom on Mobile

1.4.4 — Resize Text

Scenario

Setting

A recipe site's ingredient list

What’s wrong

maximum-scale=1 / user-scalable=no in viewport meta tag (page zoom settings) blocking pinch-zoom on mobile (no other resize path).

Example

html { font-size: 14px; } /* fixed px, breaks at 200% browser zoom */

Why it matters

Low-vision people who enlarge text instead of using a screen reader.

How to test

Check the viewport meta tag in page source: maximum-scale=1 or user-scalable=no blocks pinch-zoom on mobile with no other resize path — this fails.

How to fix

At 200% text size/zoom, all content and controls must remain visible, readable, and usable — nothing clipped, overlapped, or lost. html { font-size: 100%; } body { font-size: 1rem; } /* scales with zoom */ Text sized in rem/em scales when the user zooms; hard-coded pixel sizes can get clipped or overlap.

Outcome

On a recipe site's ingredient list, this barrier is gone for low-vision people who enlarge text instead of using a screen reader — they can complete the task without hitting this wall.

Who is affected