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Re: [csswg-drafts] [css-fonts-4][varfont] Automatic optical size/style selection

From: Rob McKaughan via GitHub <sysbot+gh@w3.org>
Date: Fri, 10 Mar 2017 18:01:31 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-285740202-1489168890-sysbot+gh@w3.org>
@dberlow has a good point about selecting opsz after browser zoom. I looked into this. My understanding, though, is that browser zoom is more often used by people with low vision to make text readable than it is for other uses. 

For these users, who need to use very large text sizes, selecting opsz after zooming would shift all the text towards display styles, which is exactly the wrong thing for them. For low vision users, it's more helpful to have all the design choices embodied by small and text optical styles as those prioritize legibility. So, selecting opsz before browser zoom is more helpful. This is the motivation behind my accessibility point above. It does mean that typography suffers for those with normal vision, but it also helps people with low vision read better. 

We can put this point in the non-normative portion of the spec. I suspect then, those with vision problems will gravitate to those browsers that implement selection before zoom.

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Received on Friday, 10 March 2017 18:01:38 UTC

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