Ots Derived Font -

Regenerate subset including hmtx (horizontal metrics). Using pyftsubset :

pyftsubset OriginalFont.ttf --text="Hello" --layout-features=* --output-file=Subset.ttf If you meant something else by (e.g., a specific software like OBS Studio, a game, or a design tool), please clarify and I’ll give a targeted answer. ots derived font