You sir, are amazing! This is exactly what I've been searching for (as well as inner peace! LOL!)
Could I please suggest two features IMHO:
1)Ability to zoom in on the image where you place the nubs so you can be more precise.
2) Add a ratio lock between the Width and Height dimensions adjusters. Then you can increase just one but still maintain your images's original ratio.
Thank you kindly for your wonderful plugin. I believe it should be part of the main program by default!
(PS- Donated via Paypal! Not much, but it's with genuine gratitude!)