they are canon. They were made in JKR's supervision. She chose the actors, places and many more things. They wouldn't have been canon if WB made them without JKR's choices.

Did you even watch the video i linked?

So according to you Voldemort has both Red and Blue eyes? Harry has both green and blue eyes? Sirius died from Avada Kedavra and another Curse? Snape’s last words were both “look at me” and “you have your mother’s eyes”?

And i could go on forever with examples.

The books are canon the 8 Harry Potter movies are not canon, but the 5 fantastic beasts films are canon.

Exactly

@Elaexy do you mean the movies are canon or non canon?

Harry Potter books and Phantastic Beats movies are canon

Yes