Log-In-Log-On | Commonly Confused Words

Log in

/lɒɡ ɪn/

To enter a set of credentials to access a computer system, website, or application.

/lɒɡ on/

To connect to a computer system by entering a username and password

Both phrases are related to accessing computer systems or online platforms.
Log in often implies entering a username and password to access a user account.
Log on generally refers to accessing a system itself, without the emphasis on account-specific entry.
Think of log in as going into your personalized space within a system.
Use log on when referring to simply accessing or starting the system overall.