I've done some limited tests myself, and I'm not convinced by mozjpeg (yet). While savings can be quite significant, up to 10% for large images, there is defini

I've done some limited tests myself, and I'm not convinced by mozjpeg (yet). While savings can be quite significant, up to 10% for large images, there is definitely quality loss, albeit minor. Trellis seems to lay a faint blurriness over the whole image. I admit it's difficult to notice at 1:1 resolution and objectively a good trade, but I'm still wary and will wait for further improvements.