osu-resources-local/osu.Game.Resources/Fonts

How to create binary font files

There are two options:

When generating

When using the official BMFont generator, there is a setting in "Export Options" that specifies the output file format. Just set that to "binary" to get the correct file format. Remember to use the file extension ".bin".

Converting existing fonts

using SharpFNT;

string filename = "MyFont.fnt";

var font = BitmapFont.FromFile(filename);

// This value is ignored for Unicode fonts, but serializing will fail
// if this is empty so just set it to ANSI (0 in binary)
if (font.Info.Charset == string.Empty)
{
    font.Info.Charset = "ANSI";
}

font.Save(Path.ChangeExtension(filename, "bin"), FormatHint.Binary);