Set custom fonts
GroupDocs.Viewer provides the feature to add custom font sources.
Following code snippet shows how to set a custom font source.
FolderFontSource fontSource = new FolderFontSource("C:\\custom_fonts", SearchOption.TOP_FOLDER_ONLY);
FontSettings.setFontSources(fontSource);
try (Viewer viewer = new Viewer("sample.docx")) {
HtmlViewOptions viewOptions = HtmlViewOptions.forEmbeddedResources();
viewer.view(viewOptions);
}