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Syncfusion Feedback

Image background color always black

Thread ID:





142284 Jan 25,2019 12:38 AM UTC Jan 31,2019 12:25 PM UTC ASP.NET Core - EJ 2 1
Tags: PDF
Ernest Mallett
Asked On January 25, 2019 12:38 AM UTC

I am currently using the HtmlToPdfConverter to convert HTML to an image.  Every time the image comes out the background is always black.

The code that I am using is below:

    public class HtmlConverterService : IHtmlConverter
        public byte[] ConvertToByteArray(string html)
            HtmlToPdfConverter htmlConverter = new HtmlToPdfConverter();
            WebKitConverterSettings settings = new WebKitConverterSettings();
            settings.WebKitPath = GetQtBinaries();
            settings.BackgroundColor = Color.White;
            settings.HtmlEncoding = Encoding.UTF8;
            settings.WebKitViewPort = new Size();
            htmlConverter.ConverterSettings = settings;
            Image document = htmlConverter.ConvertToImage(html, "");

            return document.ImageData;

        public string ConvertToBase64(string html)
            return "data:image/png;base64," + Convert.ToBase64String(ConvertToByteArray(html));

        private string GetQtBinaries()
            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
                return Path.Combine("QtBinaries", "QtBinariesWindows");
            if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
                return Path.Combine("QtBinaries", "QtBinariesLinux");
            return Path.Combine("QtBinaries", "QtBinariesMac");

Dilli Babu Nandha Gopal [Syncfusion]
Replied On January 31, 2019 12:25 PM UTC

Hi Ernest, 

We have confirmed that the reported issue with “Background color is black when converting HTML to Image” is a defect. The fix for this issue will be included in our upcoming main release 2019 Volume 1 which is estimated to be available by March 2019 tentatively.  

Dilli babu. 


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