The Marvel Netflix shows are canonical in the sense that they are official productions of Marvel Entertainment.
However, if one uses the word “canon” to mean whether they are part of the same shared storyline as Marvel Studios’ Marvel Cinematic Universe films, the answer is “kind of.” The Marvel Netflix shows make occasional reference to events and characters from the MCU films, but the MCU films have never made reference to events and characters from the Marvel Netflix shows (they can now bc Netflix’s characters rights have recently expired).
It is also likely that Marvel will eventually reboot or remake the Marvel Netflix shows as Disney+ streaming shows or feature films.