1 Typeface
LovyanGFX already ships with 186 fonts, and using one costs no flash for glyph data at all. Generate here when you want a size or a typeface the presets do not have, or when you want to pay flash for only the characters you actually use.
Only SIL OFL 1.1 and Apache-2.0 families are listed — both allow the generated glyph data to be embedded in and shipped with your firmware (with attribution, which the generated header carries).
Generating an embedded font converts the typeface's glyphs into data that ships inside your firmware — that is redistribution. Many fonts, including most commercial fonts and the ones bundled with Windows, macOS and Office, do not permit it. Only use a file here if its licence explicitly allows embedding and redistribution.
2 Size & name
The size is the em — the typeface's design size. A full-width character advances exactly this much, so it is a horizontal measurement, not a vertical one. "24" still looks about the same size in any typeface (cap heights differ by roughly a pixel). The line height is derived from the glyphs the font ends up containing and is normally larger than the em; it is shown next to the preview together with the tallest ink. For 1bpp output, the threshold decides how much anti-aliased coverage counts as "on"; AA output preserves the coverage.
3 Characters
Show the characters
4 Generate
Rendered from the generated glyph coverage with the library's LovyanGFX-compatible engine.