Browsers and operating systems usually have settings to make pages larger or smaller. This makes computers accessible for some users with low-vision and I've also seen it used temporarily for presenting, screencasting, or even personal preference.
I've seen two methods for enlarging content:
- Expose a
scale factor(like 1.5 or 150%) to uniformly scale all dimensions
- Apply a scale only to font size so that text is the only element that scales
If a user has access to both #1 and #2, do they prefer one or the other? What scenario would cause them to select #2?
Gion Kunz asserts that there's no reason to even provide #2 as an option. Someone in the comments mentioned the eBook scenario, which relies heavily on font size scaling. But most apps are not eBooks. So why should we continue to support font size scaling? What scenario would it be used in?