What is the green dot on snapchat?

The green dot on Snapchat indicates that a user is currently active and online on the app. This feature was introduced as part of Snapchat's "Here for You" initiative, which aims to promote mental health and well-being by showing users when their friends are available to chat. The green dot will appear next to a friend's name in the chat window and on their profile page when they are actively using the app. This can help users know when their friends are available to chat and engage in real-time conversations. The green dot will disappear once the user is no longer active on the app.