Hidden utility in Mac OSX to convert html (and other formats) to pdf

Utility is located in /System/Library/Printers/Libraries/convert

Example:
/System/Library/Printers/Libraries/convert -f ~/Desktop/Quotes.html -o ~/Desktop/Quotes.pdf -j "application/pdf"

/System/Library/Printers/Libraries/convert -f Learning.rtf -j "application/pdf" > sample.pdf

Credits: http://forums.realsoftware.com/viewtopic.php?t=13436