Btw, did some experiments regarding the BB and -100 “postfixes”. As far as I can see you get considerable better quality with -100 added. Much less compression artifacts. Cannot see BB doing any difference.
I compared these (not links/embedded because I’m a new user who cannot do that in this forum):
from the album
itunes.apple.com/us/album/strange-little-birds/id1092715940?ign-mpt=uo%3D4
Physical dimensions are all the same (1400x1400), but with -100 you get a 1.13MB jpg, without you get a 385KB. When looking at these in 100% or 200% scale, it’s very easy to see the difference in compression quality when looking at the area around the three claws.