I was looking for a way to compile all the scripts, code, and other elements that could slow down a joomla production site. I purchased the pro version and this plug in is the answer. It took my scores from a 77 to a 98 on gtmetrix. Scored a 100 on pingdom and a 98 on google pagespeed. Amazing little plugin and I highly recommended to go pro. I needed help and Samuel helped me within hours of me submitting my question. Excellent all around.