Craig Hockenberry:
Let’s just say I spent a lot of quality time with Google before eventually stumbling across a hint on Microsoft’s developer site. The document talks about using a default setting of 96 DPI. I’ve been spending a lot of time lately with the Mac’s text system, so I knew that TextEdit was using 72 DPI to render text.
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That’s another way to think about this problem: a single point of text on your Mac will be 1.33 times larger in your browser.