Program.cs

// See https://aka.ms/new-console-template for more information

using Syncfusion.HtmlConverter;
using Syncfusion.Pdf;
using System.Runtime.InteropServices;

//Initialize the HTML to PDF converter.
HtmlToPdfConverter htmlConverter = new HtmlToPdfConverter();

//Initialize blink converter settings. 
BlinkConverterSettings blinkConverterSettings = new BlinkConverterSettings();

//Enable offline mode.
blinkConverterSettings.EnableOfflineMode = true;

//Assign Blink converter settings to HTML converter.
htmlConverter.ConverterSettings = blinkConverterSettings;

//Convert URL to PDF document. 
PdfDocument document = htmlConverter.Convert("https://www.google.com");

//Create file stream. 
using (FileStream fileStream = new FileStream(Path.GetFullPath(@"Output/HTML-to-PDF.pdf"), FileMode.Create, FileAccess.ReadWrite))
{
    //Save the PDF document 
    document.Save(fileStream);
}
//Close the document.
document.Close(true);