RoyT.TrueType 0.2.0

dotnet add package RoyT.TrueType --version 0.2.0
NuGet\Install-Package RoyT.TrueType -Version 0.2.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="RoyT.TrueType" Version="0.2.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add RoyT.TrueType --version 0.2.0
#r "nuget: RoyT.TrueType, 0.2.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install RoyT.TrueType as a Cake Addin
#addin nuget:?package=RoyT.TrueType&version=0.2.0

// Install RoyT.TrueType as a Cake Tool
#tool nuget:?package=RoyT.TrueType&version=0.2.0


Current version: 0.2.0

A TrueType parser for reading, glyphIds, names, descriptions, and kerning information from TrueType fonts. Supports .NetStandard 1.6, .Net 4.6.1 and higher.

You can directly add this library to your project using NuGet:

Install-Package RoyT.TrueType

For more information please visit my blog at

To learn more about the TrueType font format and terminology used here see the Open Type specification.

Why choose this library?

  • It can read the following tables of all fonts that exist in a standard Windows 10 installation:

    • CMAP, character to glyph index mapping table
    • KERN, inter character spacing (kerning)
    • NAME, multilingual strings for font names, styles, ...
    • MAXP, memory requirements
    • HMTX, horizontal metrics table
    • VMTX, vertical metrics table
    • HHEA, horizontal header table
    • VHEA, vertical header table
    • OS2 OS/2 and Windows Metric Table
  • It exposes both an easy to use API to directly get useful information from these tables, but also exposes the tables themselves so you add your own interpretation of the data

  • It works on both .Net Core 1.0 and .Net 4.6.1 and higher by targetting .Net standard 1.6


  • This library aims to read meta-information from .ttf files, it does not give you enough information to render glyphs yourself. For that you need OpenType and HarfBuzz.

Supported Cmap formats


Subtable format supported/unsupported remarks
Segmented mapping to delta values supported Most common
Trimmed table mapping supported
Segmented coverage supported
Byte encoding table supported Least common
High-byte mapping through table unsupported I have not seeen a font that uses this yet, samples welcome
Mixed 16-bit and 32-bit coverage unsupported I have not seeen a font that uses this yet, samples welcome
Trimmed array unsupported I have not seeen a font that uses this yet, samples welcome
Many-to-one range mappings unsupported I have not seeen a font that uses this yet, samples welcome
Unicode Variation Sequences unsupported Specifies variations of a single glyph

Usage example

var font = TrueTypeFont.FromFile(@"C:\Windows\Fonts\arial.ttf");

// Using the helper functions
var glyphIndex = GlyphHelper.GetGlyphIndex('A', font);  // 36
var horizontalKerning = KerningHelper.GetHorizontalKerning('A', 'W', font);   // -76
var name = NameHelper.GetName(NameId.FontSubfamilyName, new CultureInfo("nl-NL"), font); // Standaard

// Diving in deep yourself to get some specific information is also possible
if (font.KernTable.SubtableCount > 0)
    var leftCode = GlyphHelper.GetGlyphIndex(left, font);
    var rightCode = GlyphHelper.GetGlyphIndex(right, font);

    foreach (var subTable in font.KernTable.Subtables)
        if (subTable.Format0 != null && subTable.Direction == Direction.Vertical
            && subTable.Values == Values.Kerning)
            var pair = new KerningPair((ushort)leftCode, (ushort)rightCode);

            if (subTable.Format0.Map.TryGetValue(pair, out var value))
                // Do something
Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.
  • .NETStandard 2.0

    • No dependencies.

NuGet packages (1)

Showing the top 1 NuGet packages that depend on RoyT.TrueType:

Package Downloads

Decal service library for UtilityBelt. Provides ui / settings helpers.

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Re-implementation of The Sims Online.
Version Downloads Last updated
0.2.0 885 2/24/2023
0.1.1 35,919 7/4/2018
0.1.0 917 6/20/2018