"As usual"

Translation: Som vanligt

[bigswedeej]

Difference between vanlig and vanligt?

[DenOrangeMannen]

(Disclaimer: not a native speaker.)
When used as an adjective, the ending matches the noun (vanlig for -en nouns and vanligt for -et nouns). When used as an adverb (which is the case for this example) it is always vanligt.

[Saliniome]

Does "vanligtvis" work as well?

[devalanteriel]

No, that means "usually".