Set the DPI

VBC#

using IronPrint;

// Set high-resolution output at 300 DPI
var printSettings = new PrintSettings
{
    Dpi = 300
};

Printer.Print("report.pdf", printSettings);

Imports IronPrint

' Set high-resolution output at 300 DPI
Dim printSettings = New PrintSettings With {
    .Dpi = 300
}

Printer.Print("report.pdf", printSettings)

PM > Install-Package IronPrint

Install-Package IronPrint

Set the DPI

DPI (dots per inch) determines how many individual ink dots the printer places within each inch of paper. Raising the Dpi property on PrintSettings increases the sharpness of text, images, and fine lines - 300 DPI is a common choice for professional-quality documents.

Keep in mind that the actual resolution is capped by the printer hardware. If you request 600 DPI on a printer that tops out at 300, the driver will use its maximum capability. Higher DPI values also increase spooler file sizes and print times, so choose a resolution that balances quality with throughput for your specific use case.

Read the Full DPI Configuration Guide for IronPrint