GFS Neohellenic Math not usable as a Web font / failing OTS validation

[fred-wang]

I downloaded your GFS Neohellenic Math [1] and tried to use it as a Web font [2]. Firefox and Chromium browsers fail to load that font (with OTS validation errors printed in the developer console) while that font makes WebKit hang.

Donwloading OTS [3] and running it on your font, I get the following:

./ots-sanitize ~/GFSNeohellenicMath.otf

ERROR: CFF : Failed validating CharStrings INDEX ERROR: CFF : Failed to parse table Failed to sanitize file!

So it looks like your font is malformed. I reported this to info AT greekfontsociety-gfs DOT gr

[1] https://greekfontsociety-gfs.gr/typefaces/Math [2] https://developer.mozilla.org/en-US/docs/Learn/CSS/Styling_text/Web_fonts [3] https://github.com/khaledhosny/ots/releases