PdfSaveOptions.UseCoreFonts property

Gets or sets a value determining whether or not to substitute TrueType fonts Arial, Times New Roman, Courier New and Symbol with core PDF Type 1 fonts.

public bool UseCoreFonts { get; set; }


The default value is false. When this value is set to true Arial, Times New Roman, Courier New and Symbol fonts are replaced in PDF document with corresponding core Type 1 font.

Core PDF fonts, or their font metrics and suitable substitution fonts, are required to be available to any PDF viewer application.

This setting works only for the text in ANSI (Windows-1252) encoding. Non-ANSI text will be written with embedded TrueType font regardless of this setting.

PDF/A and PDF/UA compliance requires all fonts to be embedded. false value will be used automatically when saving to PDF/A and PDF/UA.

Core fonts are not supported when saving to PDF 2.0 format. false value will be used automatically when saving to PDF 2.0.

This option has a higher priority then FontEmbeddingMode option.


Shows how enable/disable PDF Type 1 font substitution.

Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);

builder.Font.Name = "Arial";
builder.Writeln("Hello world!");
builder.Font.Name = "Courier New";
builder.Writeln("The quick brown fox jumps over the lazy dog.");

// Create a "PdfSaveOptions" object that we can pass to the document's "Save" method
// to modify how that method converts the document to .PDF.
PdfSaveOptions options = new PdfSaveOptions();

// Set the "UseCoreFonts" property to "true" to replace some fonts,
// including the two fonts in our document, with their PDF Type 1 equivalents.
// Set the "UseCoreFonts" property to "false" to not apply PDF Type 1 fonts.
options.UseCoreFonts = useCoreFonts;

doc.Save(ArtifactsDir + "PdfSaveOptions.EmbedCoreFonts.pdf", options);

if (useCoreFonts)
    Assert.That(3000, Is.AtLeast(new FileInfo(ArtifactsDir + "PdfSaveOptions.EmbedCoreFonts.pdf").Length));
    Assert.That(30000, Is.LessThan(new FileInfo(ArtifactsDir + "PdfSaveOptions.EmbedCoreFonts.pdf").Length));

See Also