Hey Armin.
Just wanted to let you know that the "+" and "-" shortcuts to resize the images before embedding doesn't seem to work on
Windows 8.1 Pro
Google Chrome 43.0.2357.130 m
Hungarian-layout Logitech YU0004 keyboard (I added this with an edit now, I'm not convinced that this would be the problem)
It's not that big of a deal though, since it can be done afterwards with the corner resizing.
Cheers <3 ,
Gergő