opentype__xavgcharwidth

Checking OS/2 fsSelection value.

opentype/xavgcharwidth

• Applies to: TTF
• Fontspector can hotfix?: no
• Fontspector can fix sources?: no

Rationale

The OS/2.xAvgCharWidth field is used to calculate the width of a string of characters. It is the average width of all non-zero width glyphs in the font.

This check ensures that the value is correct. A failure here may indicate a bug in the font compiler, rather than something that the designer can do anything about.

Proposal

• https://github.com/fonttools/fontbakery/issues/4829

Profiles

• opentype (in section 'Opentype Specification Checks')

• universal (in section 'Opentype Specification Checks')

• googlefonts (in section 'Opentype Specification Checks')