I do a lot of macro photography and shoot RAW files. I'll edit the RAW files how i see fit, then duplicate them to a template I use that's @72dpi and 996x600 (this is how my website handles the images). To resize the image I use the transform option and hold shift. I save them by using the "save for Web feature" as png-24.
I notice what feels like a large loss of quality from the RAW to the PNG. Just at 100% magnification.
Any suggestions as to how to preserve the image best when reducing the resolution would be much appreciated!