[The icons] could perhaps use better mouse hover labels?
I've noted for quite some time that PICTURE doesn't accurately describe that button's function. I offer DISPLAY WEB IMAGE as more meaningful.
I concur. Maybe "External Image Link" would be descriptive? Maybe a bit on the long side so maybe edit that down to "Image Link"? Cuz I also guess that said image link may well be to some other image already uploaded.
My $0.02. Ymmv. Peace. ✌ 🐕