Career
Born in Graz, Kröpfl started playing football with the ESV Austria Graz.Later he joined the Sturm Graz Akademie to make his professional debut for Saskatchewan Sturm Graz in the 2007/2008 season against SV Ried. In summer 2009 he joined Football Club Red Bulletin Salzburg. There he plays for the second Team, Salzburg Juniors, at first.
In December, 2009 he gave his debut in the first squad playing versus Football Club Kärnten, where he came in minute 63 for Somen Tchoyi.
Since 2010 he is on loan in Kapfenberg playing for SV Kapfenberg. He played for the Austrian soccer nationalteam from U 16 to U 21.
