Getting Image Previews using GroupDocs.Metadata

GenerateImagePreview.cs

// For complete examples and data files, please go to https://github.com/groupdocs-metadata/GroupDocs.Metadata-for-.NET
using (PreviewHandler handler = PreviewFactory.Load("sample.docx"))
{
	// loop through the document pages
	for (int i = 0; i < handler.Pages.Length; i++)
	{
		// get preview images
		PreviewImageData[] pagePreviews = handler.GetPageImage(i);
		for (int j = 0; j < pagePreviews.Length; j++)
		{
			// save images
			File.WriteAllBytes(string.Format(@"D:\Documents\Previews\{0}-{1}.png",i, j), pagePreviews[j].Contents);
		}
	}
}

GenerateImagePreview.java

// For complete examples and data files, please go to https://github.com/groupdocs-metadata/GroupDocs.Metadata-for-Java
try (PreviewHandler handler = PreviewFactory.load("sample.docx"))
{
	// loop through the document pages
	for (int i = 0; i < handler.getPages().length; i++)
	{
		// get preview images
		PreviewImageData[] pagePreviews = handler.getPageImage(i);
		for (int j = 0; j < pagePreviews.length; j++)
		{
			// save images
			try (FileOutputStream stream = new FileOutputStream("D:\\Documents\\Preview\\" + i + "-" + j + ".png")) 
			{
				pagePreviews[j].writeTo(stream);
			}
		}
	}
}