How to convert djvu file to pdf or other more common file format?
Solution 1:
For DjVuLibre, you can use File » Export as… » PDF format. It's an open source software, fast converting, and possible to tweak the conversion (i.e. change the resolution by specifying the DPI, or the quality of the JPEG conversion)
Solution 2:
Short Solution: https://0x2a.at/site/projects/djvu2pdf/
For those interested or for those that like using the terminal on a Mac
I recently asked this question when I found a strange file on my computer whilst trying to come up with the answer to the same question posed by this thread.
First, install homebrew through the terminal with this
ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"
And then install djvu2pdf, which, by the way, has almost no documentation but works like a charm.
brew install djvu2pdf
Then, navigate to the directory where my .djvu file is stored, and run this command:
djvu2pdf [somebook.djvu]
Since most textbooks have really long names that have spaces in between them, just enter a little bit of the name (enough to make it so there is only one file in the directory that starts with the current string) and then press tab.
It takes a while, how long I didn't figure out, but definitely not more than half an hour, and it will place a new file in the directory that is a pdf version of the .djvu file.
This is the only method I've found to work.
Solution 3:
The ddjvu
utility from the DjVuLibre suite seems to do a good job. Here's a small example:
ddjvu -format=pdf <input>.djvu <output>.pdf
Solution 4:
Try the online converter
http://www.djvu-pdf.com
It is working fine for many types of DjVu files and should be easy to use...