--threshold-level=<1-100>

Determines which objects in an document belong in the foreground and which belong in the background. A value of 0 indicates that most objects should be placed in the background; a value of 100 specifies that most objects should be placed in the foreground. The default is 80, which is suitable for most documents.

Examples

pdftodjvu --threshold-level=50 document.pdf [document.djvu]

pdftodjvu --threshold-level=60 document.ps [document.djvu]