Sorry, no, Nordic languages are not compact. They may stuff more words together (e.g. generalforsamling instead of general/annual meeting), but just putting two words together doesn't make it more compact or easier to read.
As I noted in the other comment, there does exist multiple guidelines that do suggest a relative text compaction of many Nordic languages when translated from English. Guidelines themselves may have been biased to specific set of texts, of course. If it's the case I'd like to hear counterexamples.