I’m using iText to generate PDFs from HTML files. It works efficiently for files under 1MB, but larger files (over 2MB) take up to 2 hours to process. Is there a solution to improve performance?

For HTML files around 6-7 MB, is there an efficient way to generate a PDF using iText?

public static void main() throws IOException {
    File htmlSource = new File("input.html");
    File pdfDest = new File("output.pdf");
    ConverterProperties converterProperties = new ConverterProperties();
    HtmlConverter.convertToPdf(new FileInputStream(htmlSource),new FileOutputStream(pdfDest), converterProperties);
}