What font types are supported in LibreCAD? And where do I download from and install them to?
You can find all about LibreCAD fonts in our Wiki. See:
There is a link at the end of the article directing to our online font converter, which can convert TTF fonts into LFF.
But not all TTF fonts can be converted. It has to be an outline type font and LFF does not support filled glyphs. So a bold TTF font will convert into an outlined LFF font.
The glyphs can be filled with hatch in the drawing if needed or it might work without hatch if you use a broad line width.
Just give it a try to see if it works for you.
Archived post: LibreCAD-user - Font Roboto in LibreCAD