Remove case sensitivity from username when logging in When I try to login, my usernames are treated as case sensitive. As in if username is john and I try entering John, it is not accepted.

Is it possible if I could make all the characters lower case before they could be submitted?

Thanks
Using hook_user_insert, you can convert every letter of username to lower case once a user is being created. Then when a user is submitting the login form, you can convert its username field to lower case. So from now on all of the usernames will be in lower case it is no longer case sensitive