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Re: Safari Pinch Zoom for 1.4.4


From: Patrick H. Lauke
Date: Oct 27, 2020 8:15AM

On 27/10/2020 14:01, Justin Leasure wrote:
> Hello,
> I sent a similar question out about a week ago, but I had a follow up. Does
> "pinch zoom" within Safari Mobile meet the requirements of 1.4.4 (resize
> text)? The requirement states that zooming must not cause "loss of content
> or functionality." Pinch zooming causes full viewport zooming and can cause
> excessive horizontal/vertical scrolling, which I think we would all agree
> is not ideal. However, if you had a situation where the browser zoom (using
> the "Aa" zoom feature within Safari) feature caused a loss of
> functionality, would you make the argument that a website still meets 1.4.4
> if pinch zoom is enabled? I know that 1.4.11 speaks to the fact that reflow
> of content (which should only require one dimensional scrolling) is not
> often achievable on mobile devices. So, one could take this to mean that
> 1.4.4 is still achieved even with two dimensional scrolling. Thanks in
> advance for your input.

1.4.4 and 1.4.11 need to be evaluated separately.

1.4.4 does not disallow bi-directional scrolling from occurring. All it
requires is that users be able somehow (not specified how) resize to
200% without things breaking (controls or content overlapping, being cut
off and unusuable/unreadable, etc). So yes, pinch-zoom is an acceptable
mechanism to pass 1.4.4 if nothing gets cut off/overlapped. Same way
that zooming on desktop, even without reflowing (e.g. if the page has
explicitly-sized containers or elements, and is not doing anything
responsive or elastic), is also a valid way of passing 1.4.4 if nothing
gets overlapped/cut off.

Patrick H. Lauke

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