@MooPoint This is much better, the previous one had terrible artifacts. Hopefully you'll do the same for the previous chapters too. You could still optimize a bit further with PNG-8, the filesize should be even smaller and it'd be lossless anyway.
Also, you should fix the white levels too: the background is currently #fdfdfd, and your cleaning is visible since you used #ffffff. Level it so it's all #ffffff.
@Teasday hmm, okay so I've set my denoise to 16%, black 5%, white 96%. Saved as PNG-8; uploaded that. I do see see a difference... though my eyes aren't good enough to distinguish details.
@MooPoint Thanks, it looks pretty good now. Rather than (just) your eyes, it could also be that your monitor isn't good enough to make the differences obvious. If you compare this to the previous chapter, zoom in and play with the contrast if it's still hard to see, I think you'll find the difference in artifacting is quite clear.