PBM to DJVU Converter
Convert your pbm files to djvu online & free
How to convert PBM to DJVU
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose "to djvu"
Choose djvu or any other format you need as a result (more than 200 formats supported)
Download your djvu
Let the file convert and you can download your djvu file right afterwards