Export a Page Image

The following code is to save the first page to an image file using Page.SaveImageAs Method

djvu2img.cs	Copy Code
using System; using DjVu; namespace DjVu2Jpeg { class DjVu2Jpeg { // Usage: djvu2img INPUT_DJVU_FILENAME OUTPUT_JPEG_FILENAME static void Main(string[] args) { // TODO: ADD app's license script here or REMOVE the following line LicenseManager.LicenseScript = "......"; using (Document doc = new Document(args[0])) { doc.Pages[0].SaveImageAs(args[1], ImageFormat.Jpeg, 70); } } } }

djvu2img.cs

Copy Code

using System;
using DjVu;
namespace DjVu2Jpeg
{
  class DjVu2Jpeg
  {
    // Usage: djvu2img INPUT_DJVU_FILENAME OUTPUT_JPEG_FILENAME
    static void Main(string[] args)
    {
      // TODO: ADD app's license script here or REMOVE the following line
      LicenseManager.LicenseScript = "......";

      using (Document doc = new Document(args[0]))
      {
        doc.Pages[0].SaveImageAs(args[1], ImageFormat.Jpeg, 70);
      }
    }
  }
}

Export Document to a TIFF File

Because TIFF is very unique that it can bundle multiple pages, DjVu# provides a specialized method for TIFF export; Document.SaveTiffAs Method is used to save all of the document pages to a file.

The following code is a minimum sample to convert DjVu file to a TIFF file.

djvu2tiff.cs	Copy Code
using System; using DjVu; namespace DjVu2Tiff { class DjVu2Tiff { // Usage: djvu2tiff INPUT_DJVU_FILENAME OUTPUT_TIFF_FILENAME static void Main(string[] args) { // TODO: ADD app's license script here or REMOVE the following line LicenseManager.LicenseScript = "......"; using (Document doc = new Document(args[0])) { doc.SaveTiffAs(args[1], TiffBitonalEncodingMethod.CcittFax4, // G4 encoding for bitonal pages TiffPictureEncodingMethod.Jpeg, // JPEG for color pages 75); // JPEG quality=75 } } } }

djvu2tiff.cs

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using System;
using DjVu;
namespace DjVu2Tiff
{
  class DjVu2Tiff
  {
    // Usage: djvu2tiff INPUT_DJVU_FILENAME OUTPUT_TIFF_FILENAME
    static void Main(string[] args)
    {
      // TODO: ADD app's license script here or REMOVE the following line
      LicenseManager.LicenseScript = "......"; 

      using (Document doc = new Document(args[0]))
      {
        doc.SaveTiffAs(args[1],
          TiffBitonalEncodingMethod.CcittFax4, // G4 encoding for bitonal pages
          TiffPictureEncodingMethod.Jpeg, // JPEG for color pages
          75); // JPEG quality=75
      }
    }
  }
}

Decoding Secure DjVu File

If your code should also support Secure DjVu Files, you should implement authentication logic. For more information, see Handling Secure DjVu.