it seems like nobody has faced this "problem" before.
Most of the icons you can find online for QlikView have a white background which is quite annoying when you want to use it as a shortcut_icon...
A colleague made one for me. I'm searching for a slightly bigger one, but at least this one does not have a background.
I will attach the .ico file to this post. Feel free to use it for your own purposes!
QlikView.ico 97.3 K