The sizes option specifies the number of data chunks that comprise a DjVu® image and the size of each chunk (in bytes). Data chunks are logical data units that allow DjVu images to be downloaded progressively each time the DjVu Browser Plug-in refreshes. When the plugin downloads an image, it decodes a chunk and displays the results. It then decodes the next chunk to improve the image quality and again displays the results. This technique allows you to begin viewing an image immediately.
For example, if you have a file that is 16 KB, you could specify --sizes=4096,8192,16384 to indicate that three chunks should be encoded: the first chunk is 4 KB, the second is 4 KB more for a total of 8KB, and the last chunk is 8 KB more for a total file size of approximately 16 KB. When you view the resulting DjVu file, you will begin seeing the image as soon as the plugin downloads the first 4 KB.
This option is useful when disk space is limited or when you want to browse image content quickly.
NOTE: Do not use this option with the quality option.
Supporting commands:
documenttodjvu, phototodjvu