Capline overshoots render strangely on Mac at 13 pt and 18 pt

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Sam Moore's picture
Joined: 15 Mar 2013 - 6:06pm
Capline overshoots render strangely on Mac at 13 pt and 18 pt

Hi everyone,

I'm having some issues with a truetype web font conversion on FontSquirrel. The resulting truetype hints look as good as they can on Windows, but at 13 pt and 18pt only, the overshoots on rounded glyphs render strangely. I haven't found a solution for this yet, but I'm hoping someone might be able to help me get to the bottom of this.

Is it possible that the truetype hinting instructions are affecting rendering on OSX? I've read that hints are mostly ignored by this operating system in favor of something more built in, so I'm a little confused.

Are there certain tests I should run, or is there more information that would be helpful in understanding the issue?

Image below:

Jason Campbell's picture
Joined: 8 Oct 2005 - 11:52am

I don't think the problem is with overshoots, though. It looks to me that every glyph exhibits this issue, note that the top horizontal strokes of the Z, E, F, T, all look "thick". I think it's just that in the case of the rounds, you're only seeing this effect in a more limited area, while in characters with vertical strokes it's just not that noticeable.

But no, TrueType instructions aren't causing this effect.