Thanks everybody for the help. After reading everything and doing some own research/image comparing, I found out that the older Paint.net (v4.3.x) must have used the Fant option. What I mainly use the program for, is to crop & resize images to a smaller resolution. I have a question if possible, so when enlarging an image ''Bicubic'' is the one to go for. And ''Fant'' when making it smaller. However lets say that I want to resize to a smaller image, and have the best quality with that. Would Fant still be a better option, or should I use Bicubic in this case? Even though Bicubic is mainly for enlarging, it might (maybe) provide slightly better quality compared to Fant. I did a comparison and couldn't spot much, but regardless of that I want to set it to the best quality preserver to call it like that, since I'm going to leave these options untouched after setting them.