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200% website scaling


From: Kalle Lahtinen
Date: Nov 28, 2019 4:55AM


I'm doing accessibility testing for my company and seem to come to a
problem with Success Criterion 1.4.4 Resize text. It makes a big
difference if user has Windows scaling on operating system. If user has 100
% scaling on Windows most my test go thru with 200% zoom in the browser.
But if I have 175 % scaling in Windows then 200% zoom the website is not

So is there some standard or something that says what is acceptable scaling
level and also what resolution and screen size are minimum to test.

Im sorry if did not make any sense but ask if you need more information on
the issue.

Kalle Lahtinen

Protacon Oy