If you have a document in jpeg format and you want to print it in a more friendly printable format, let use convert from the ImageMagick utilities.
To install it :
root@localhost:~#apt-get install imagemagick imagemagick-doc
To make the conversion :
fool@localhost:~$ convert your_image.jpg your_image.pdf
Then you can open your new document with your pdf viewer.
Sometimes, this process can lead to a bigger file in size. Adding the following option -compress jpeg may help decrease this size :
fool@localhost:~$convert -compress jpeg your_image.jpg your_image.pdf
If you are planning to make more complex operations on pdf documents, have a look at the utilities provided by the pdfjam package.