WebAIM - Web Accessibility In Mind

E-mail List Archives

Re: 200% website scaling


From: Patrick H. Lauke
Date: Dec 1, 2019 2:24PM

On 01/12/2019 19:54, <EMAIL REMOVED> wrote:
> I'm not sure about b) since I still don't understand, why 1.4.4 considers
> 200% magnification and 1.4.10 400% pixel magnifications..

- Some low vision users need magnification that's above just 200%.
That's why 1.4.10 goes up to 400%
- Low vision users, particularly once zooming to 400%, will have more
trouble reading text comfortably if they have to scroll both
horizontally and vertically.

This is the core reason for 1.4.10.

- For 1.4.4, it's acceptable to have things needing horizontal and
vertical scrollbars (as long as things don't overlap/become unreachable.

Generally, if you pass 1.4.10 you're passing 1.4.4. But the opposite is
not always true.

Patrick H. Lauke

www.splintered.co.uk | https://github.com/patrickhlauke
http://flickr.com/photos/redux/ | http://redux.deviantart.com
twitter: @patrick_h_lauke | skype: patrick_h_lauke