Now that I can post messages in your wall, I copy-paste my message from reddit, as you have asked me to do in similar occasions:
Hi Evan, I first started getting involved with the wiki by editing the Sprouted and SPS-PD pages. Back then, my visual editing sklills were horrible and now that they have become less horrible ("better" would be an overstatement) I have decided to replace all the jpg. screenshots of Sprouted that I had originally added with transparent png. files. As you know different file types can't be replaced, so here is a list with image files to delete:
I also thank you for the quick response. I know about SPS-PD, but there is no big harm done if a game description in SPS-PD remains without an image for some days or a week or two, SPS-PD is the immediate next box in my cleaning list :-) Also, replacing the SPS-PD images might not even be needed, hmdzl has already released a new Halloween update, and some of these images might not be valid anymore anyway.
If you have read the previous version of this message, nevermind. Wikia doesn't always save my edits and I can't use a comment here in your wall as a notepad. I wlll leave you a full list when I finish.