High Quality .NET Font Manipulation API for TTF, OTF, and More Fonts

PM > Install-Package Aspose.Font

// Learn to convert TTF to WOFF fonts.
// TTF file path
string fontPath = @"D:\Files\font\Montserrat-Regular.ttf";

// Load the Font file
FileSystemStreamSource source = new FileSystemStreamSource(fontPath);

// Create font file definition
FontFileDefinition fileDefinition = new FontFileDefinition(source);

// Create font definition
FontDefinition fontDefinition = new FontDefinition(FontType.TTF, fileDefinition);

// Open font
Font font = Font.Open(fontDefinition);

// WOFF output path
string outPath = @"D:\Files\font\TtfToWoff_out1.woff";
FileStream outStream = File.Create(outPath);
// Convert TTF to WOFF
font.SaveToFormat(outStream, FontSavingFormats.WOFF);

 // This code example showcases detecting if a particular Type1 font supports Latin symbols or not.
// Type1 font file path
string fontPath = @"D:\Files\font\courier.pfb";

// Load the font file
FontFileDefinition fontFileDefinition = new FontFileDefinition("pfb", new FileSystemStreamSource(fontPath));

// Font definition object
FontDefinition fd = new FontDefinition(FontType.Type1, fontFileDefinition);

// Open the font
Type1Font font = (Type1Font)Font.Open(fd);

var latinText = true;

// Check for the support of latin symbols
for (uint code = 65; code < 123; code++)
{
    GlyphId gid = font.Encoding.DecodeToGid(code);
    if (gid == null || gid == GlyphUInt32Id.NotDefId)
    {
        latinText = false;
    }
}

if (latinText)
{
    Console.WriteLine("Font {0} supports latin symbols.", font.FontName);
}
else
{
    Console.WriteLine("Latin symbols are not supported by font {0}.", font.FontName);
}