No limitation everything on this site is free and legal....
Which brings me to the second answer. The link to download PDFLRF was removed due to copyright violations.
There are other tools like PDFRead that is very nice.
Also a new tool
https://www.mobileread.com/forums/showthread.php?t=31677 that is showing some real promise
If you are still inclined to finding PDFLRF google it you should find it archived out in the net somewhere
=X=