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Re: Safari Mobile WCAG Zoom Testing Approach

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From: Patrick H. Lauke
Date: Oct 19, 2020 10:02AM

On 19/10/2020 16:17, Justin Leasure wrote:
> What is the appropriate way to test for WCAG 1.4.4 (resize text) and 1.4.10
> (reflow) within the Safari Mobile? The resize text option in IOS only
> applies to applications, not web pages. There is a zoom option within IOS
> that does not allow for reflow and requires quite a bit of scrolling in
> both directions. Safari also has a zoom option ("Aa" in the top left hand
> corner of the browser). However, it doesn't seem to exclusively resize
> text. I believe the last option is the best testing approach, but I am
> wanting to confirm this is the case.


Browsers on mobile/tablet do not *do* traditional reflow when things are
zoomed, so 1.4.10 is not applicable there for web content. Tje
understanding doc comes shy of aknowledging this in the "Browsers on
mobile operating systems" section of
https://www.w3.org/WAI/WCAG21/Understanding/reflow.html and blames user
agents, but in essence for an author there's no way to detect/act on/do
reflow as such, so not applicable from a web content guidelines point of
view.

As for 1.4.4, at the most basic level, you want to check that there's a
way for a user to resize content up to 200%. Unless it's somehow
blocked, being able to pinch-zoom without things cutting off/overlapping
(which generally should not be the case, since the browsers don't
reflow) satisfies this SC.


--
Patrick H. Lauke

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