Gnostice Document Studio Java
Next-generation multi-format document-processing component suite for Java SE/EE developers

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Java 1.6 and later

Home » Newsletter » December 2015

The DocumentConverter class is used to convert DOCX and PDF documents and images to other formats. In this article, we will see how to convert documents to images and also use the various conversion settings in the process.

This code snippet converts a DOCX document to an image. It is aligned to the top of the page. The content from the original document is not resized. The pixel density of the image is 96.

public class ConvertToImage {
  
  public static void main(String[] args) {    
    DocumentConverter dc = new DocumentConverter();
    try {
      ImageEncoderSettings ies = 
          (ImageEncoderSettings) dc.getPreferences().getEncoderSettings("image/png");
      
      ies.setPageAlignment(new PageAlignment(Horizontal.CENTER, Vertical.CENTER));
      ies.setPageScaling(com.gnostice.documents.image.PageScaling.NONE);
      ies.setPageSizingMode(PageSizingMode.USE_PAGE_SIZE);      
      dc.getPreferences().getRenderingSettings().getResolution().setDpi(96);
      
      dc.convertToFile("./ad.pdf", "./sample.png");      
    } catch (FormatNotSupportedException e) {
      e.printStackTrace();
    } catch (ConverterException e) {
      e.printStackTrace();
    } catch (XDocException e) {
      e.printStackTrace();
    }
  }
}

The image looks unwieldy. Some changes...

ies.setPageScaling(com.gnostice.documents.image.PageScaling.NONE);
ies.setPageSize(new PageSize(PaperSize.A4));
ies.setPageSizingMode(PageSizingMode.USE_RELATIVE_SIZE);      
dc.getPreferences().getRenderingSettings().getResolution().setDpi(150);