My test took a bit longer than 40 seconds per image. I can see a wee bit difference and there is a fair increase in file size. I wonder if the cloaking survives resizing or other image operations.
Update, the first run produced png files, I then read the help and set the format for output to jpg. That made the file size a lot smaller. 140 KB as opposed to the original 828 KB
I guess this ort of thing could be built in to image editors.
via: John Naughton Thursday 23 July, 2020 | Memex 1.1