You simply export DJVU documents to PNG format using DJVulibre or similar software. The resulting file size will probably be larger.
Convert DjVu image file to Portable Network Graphic.
We have found 2 software records in our database eligible for .djvu to .png file format conversion.
Articles and other information relating to djvu into png conversion:
How to open and covert DjVu documents - Working with DjVu file format
Microsoft Windows software - convert djvu to png on Windows
One of the best free DjVu viewers and converters
Convert from djvu file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned djvu to png. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A DjVu converter