convert-html-to-pdf-from-url.cs

WebRequest req = WebRequest.Create(@"https://docs.oracle.com/javase/tutorial/networking/urls/readingURL.html");
// Get web page into stream
using (Stream stream = req.GetResponse().GetResponseStream())
{
	// Initialize HTML load options
	HtmlLoadOptions htmloptions = new HtmlLoadOptions("https://docs.oracle.com/");
	// Load stream into Document object
	Document pdfDocument = new Document(stream, htmloptions);
	// Save output as PDF format
	pdfDocument.Save("HTML-to-PDF.pdf");
}

convert-html-to-pdf-with-encryption.cs

// Create HTML load options
HtmlLoadOptions htmloptions = new HtmlLoadOptions();
// Load HTML file
Document doc = new Document("HTML-Document.html", htmloptions);
// Set encryption parameters
doc.Encrypt("userpassword", "ownerPassword", Permissions.ModifyContent, CryptoAlgorithm.AESx256);
// Convert HTML file to PDF
doc.Save("HTML-to-PDF.pdf");

convert-html-to-pdf.cs

// Create HTML load options
HtmlLoadOptions htmloptions = new HtmlLoadOptions();
// Load HTML file
Document doc = new Document("HTML-Document.html", htmloptions);
// Convert HTML file to PDF
doc.Save("HTML-to-PDF.pdf");