I don't read Swedish rank, but it's got to be an E-1 or an O-1, because all the E-8s are somewhere safe. ;)
/johnny
The soldier in the picture is Danish, not a Swede, and the picture is of a Danish cannon being fired. His insignia marks him as a Konstabel or Private - so OR-1 (E-1 equivalent) - of the Danske Artilleriregiment (Danish Artillery Regiment in the unlikely event you couldn’t decipher it!).
I guess whoever selected the image thought nobody would analyse it any detail, but it really doesn’t belong in an article about Sweden.