If AutoFontSubstitution is disabled, GroupDocs.Conversion uses the DefaultFont for the substitution of missing fonts. If AutoFontSubstitution is enabled, GroupDocs.Conversion evaluates all the related fields in FontInfo (Panose, Sig etc) for the missing font and finds the closest match among the available font sources. Note that font substitution mechanism will override the DefaultFont in cases when FontInfo for the missing font is available in the document. The default value is True.

public bool AutoFontSubstitution { get; set; }

Public Property AutoFontSubstitution As Boolean
	Get
	Set

public:
property bool AutoFontSubstitution {
	bool get ();
	void set (bool value);
}

member AutoFontSubstitution : bool with get, set