How to set PDF page size A4 when we use ITextRenderer to generate PDF from thymeleaf HTML template?

Question

How to set PDF page size A4 when we use ITextRenderer to generate PDF from thymeleaf HTML template ?

I have generated PDF but page size is not proper, how to set page size A4 ITextRenderer library in JAVA

    ClassLoaderTemplateResolver templateResolver = new 
    ClassLoaderTemplateResolver();
    templateResolver.setSuffix(".html");
    templateResolver.setTemplateMode("HTML5");

    TemplateEngine templateEngine = new TemplateEngine();
    templateEngine.setTemplateResolver(templateResolver);

    Context context = new Context();
    context.setVariable("name", "Thomas");

    String html = templateEngine.process("templates/Quote", context);

    OutputStream outputStream = new FileOutputStream("message.pdf");
    ITextRenderer renderer = new ITextRenderer();
    renderer.setDocumentFromString(html);
    renderer.layout();
    renderer.createPDF(outputStream,true);
    outputStream.close();

Answer 1

Please be aware that you are using FlyingSaucer , not iText . FlyingSaucer is a product that internally uses (a very old version of) iText .

You are immediately cutting yourself off from 10+ years of bugfixes and developments.

If you are comfortable going for just iText , the best way of solving this issue is with pdfHTML.

It's an add-on we wrote to the iText7 core library that is specifically designed to convert HTML into PDF.

Simple example:

    File src = new File("source_html_file.html");
    File dest = new File("target_pdf_file.pdf");

    PdfDocument pdf = new PdfDocument(new PdfWriter(dest));
    Document doc = new Document(pdf, PageSize.A4);
    InputStream stream = new FileInputStream(src);

    ConverterProperties converterProperties = new ConverterProperties();
    FontProvider dfp = new DefaultFontProvider(true, true, true);
    converterProperties.setFontProvider(dfp);

    HtmlConverter.convertToPdf(stream, pdf, converterProperties);

Check out the tutorials online for more information https://developers.itextpdf.com/content/itext-7-examples/itext-7-converting-html-pdf

Answer 2

To fix this issue using jsoup, xhtmlrenderer from flying-saucer-pdf-openpdf just set this in your html-document:

@page {
    size: A4;
}