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:

jaggies in ppt on xp


last year i finished designing a large type family of 20 styles, with up to 1550 glyphs per style (greek, cyrilic, pictograms et al.) for a client company. of course it had various growing pains, mostly overcome now, but one problem we haven't been able to figure out:

in powerpoint on windows xp, in large sizes (like 80 pt or such), they appear jagged. on the client's computers, it even seemed like the system tried to smoothen the jaggies, rather unsuccessfully. on computers that i tried, i only saw simple jaggies.

i compared other fonts, they look fine. switching between cleartype and standard smoothing does not help.

since the font files are so large, i thought it might be a memory issue, but a reduced version of 300+ glyphs still had the same problem.