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Re: Browser zooming sufficient for WCAG 1.4.4 (resize text)


From: Patrick H. Lauke
Date: Jun 29, 2015 8:40AM

On 29/06/2015 15:31, Patrick H. Lauke wrote:
> On 29/06/2015 15:28, Jonathan Avila wrote:
>> Yes, as you zoom in the text size becomes larger and the width gets
>> smaller. This can produce problems between breakpoints because the
>> author did not intend the larger text size at a given breakpoint.
> But you're not just changing the text size alone, you're changing the
> zoom factor which changes the size of the CSS pixel. When zooming up,
> you're effectively doing the same as reducing the window width (and then
> the browser blows up the size of everything to match). So no, the only
> thing that matters here is if the developer considered that particular
> width of the screen, NOT whether they expected a particular size at this
> particular breakpoint.

To give this a concrete example, using Chrome in Windows, visiting
www.paciellogroup.com (which uses Bootstrap's default breakpoints). If
you visit with a browser width of 780px at 200%, you see the same as if
you visited at 390px width at 100%. There is no mismatch between what
the browser thinks is the breakpoint, and what the font size is. See

Patrick H. Lauke

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