HTML element's margins are not applied in PDF after conversion with iTextSharp

Question

I am using iTextSharp library for HTML to PDF conversion. Could you suggest why following HTML+CSS is not converted to PDF properly? Looks like elements margins are not applied at all…Text is stuck to the left. Browser (Chrome) centers it fine.

CSS:

  #sgh-mainC {
    width: 100px;
    margin-top: 0;
    margin-bottom: 0;
    margin-right: auto;
    margin-left: auto;
}

HTML:

<!DOCTYPE html>
<html lang="en">
<head>
    <title>PDS</title>
</head>
<body>
    <div id="sgh-mainC">
        text that should be centered
    </div>
</body>
</html>

C#:

 private void CreatePdf(string html, string css)
        {
            try
            {
                Byte[] bytes;
                using (var ms = new MemoryStream())
                {
                    using (var doc = new Document())
                    {
                        using (var writer = PdfWriter.GetInstance(doc, ms))
                        {
                            doc.Open();
                            var cssResolver = new StyleAttrCSSResolver();
                            var msCss = XMLWorkerHelper.GetCSS(new MemoryStream(System.Text.Encoding.UTF8.GetBytes(css)));
                            cssResolver.AddCss(msCss);

                            HtmlPipelineContext htmlContext = new HtmlPipelineContext(null);
                            htmlContext.SetTagFactory(Tags.GetHtmlTagProcessorFactory());
                            htmlContext.AutoBookmark(false);
                            var htmlStream = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(html));

                            PdfWriterPipeline pdfPpl = new PdfWriterPipeline(doc, writer);
                            HtmlPipeline htmlPpl = new HtmlPipeline(htmlContext, pdfPpl);
                            CssResolverPipeline cssPpl = new CssResolverPipeline(cssResolver, htmlPpl);

                            new XMLParser(new XMLWorker(cssPpl, true)).Parse(htmlStream);

                            doc.Close();
                        }
                    }
                    bytes = ms.ToArray();
                }
                if (File.Exists(FilePath))
                {
                    File.Delete(FilePath);
                }
                var file = File.Create(FilePath);
                file.Write(bytes, 0, bytes.Count());
                file.Close();
            }
            catch (Exception exc)
            {
                //TODO log errror
            }
        }

Thank you. Regards

1. Are you using HTMLWorker? If so, then you should know that HTMLWorker has been abandoned ages ago and the CSS isn't supported in HTMWorker. 2. Are you using XML Worker? If so, be aware that not all CSS values are supported, but if you provide a SSCCE, someone can take a look at it. — Bruno Lowagie
XMLWorker as you can see. I've added method I am using to the post. Will do SSCCE later. But this is pretty much everything... — Victor

Dave Dave · Accepted Answer · 2017-05-23T20:26:42

This questions is a bit old, however in case anyone else stumbles across this post...

It appears there is a very limited set of CSS that iTextSharp actually supports. You can find it at http://demo.itextsupport.com/xmlworker/itextdoc/CSS-conformance-list.htm

HTML element's margins are not applied in PDF after conversion with iTextSharp

1 Answers