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

for

From: Robert Fentress
Date: Jun 25, 2015 2:45PM

Thanks for the excellent discussion everyone. This has been very
informative.

I was aware of the device pixel/reference pixel distinction, but sometimes
I forget about its implications. I'm so used to triggering breakpoints by
changing the viewport window, that I didn't fully realize that zooming the
page while keeping the viewport the same is (almost) an inversion of the
same principle. It is definitively more complex than it seems at first,
especially with Jonathan's qualifications. I'm still trying to develop the
right intuitions about it.

On Thu, Jun 25, 2015 at 1:48 PM, Jonathan Avila < <EMAIL REMOVED> >
wrote:

> > However, those sites will fail for all users with devices that have a
> screen in between breakpoints...so they're just examples of broken sites,
> full stop. No?
>
> I don't think so. There is another scale factor going on that must be
> considered with zoom. In my tests on the desktop changing my browser
> window and using zoom both affect the width and trigger breakpoints,
> however, zoom scales the page contents while shrinking the window's width
> does not cause an increase in text size. So, while in theory devices with
> odd widths could have problems IMO is it not likely because they site would
> just drop down to the lower breakpoint and the font sizes would remain what
> they were set for that lower breakpoint. With zoom, the text sizes
> increase but the lower resolution breakpoint remains causing the issue.
>
> Jonathan
>
> --
> Jonathan Avila
> Chief Accessibility Officer
> SSB BART Group
> <EMAIL REMOVED>
> Phone 703.637.8957
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>
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>