An easy to use PDF to DjVu format converter. pdf2djvu creates DjVu files from PDF files. It's able to extract: graphics, text layer, hyperlinks, document outline (bookmarks), and metadata.
It's able to extract:
1. graphics,
2. text layer,
3. hyperlinks,
4. document outline (bookmarks),
5. metadata (including XMP metadata).

The license of this software is Free, you can free download and free use this pdf converter software.