Enable font hinting

To adjust the display of an outline font (learn more about font hinting) when rendering PDF documents into image GroupDocs.Viewer provides setEnableFontHinting() setting as shown below:

NOTE: this option is supported when rendering into PNG and JPG.

    try (Viewer viewer = new Viewer("sample.pdf")) {
        PngViewOptions viewOptions = new PngViewOptions();
        viewOptions.getPdfOptions().setEnableFontHinting(true);
    
        viewer.view(viewOptions);
    }