I just recently learned how to smooth out compressed jpeg green purple spots
Many times a jpeg is compressed too much and has green and purple areas all over. Using gaussian blur blending option LCH / HSV options can truly work some magic. May want to export to jpeg-xl, been noticing old jpg export is ruining the quality even at 100 and then the file size is about twice the original and looks a lot worse, so jpeg-xl is quite nice and doesn’t have any export settings. PNG is always good but usually 15-20 MB files where jpeg-xl is around 5.