When a user uploads a new avatar, it creates multiple different files on the avatar's folder in order to serve that image across multiple pieces of the application without needing to resize it. This same functionality is used by different pieces of the application, such as Service Management request type icons, project avatars, and more.

Currently, there are more efficient ways to resize images without needing to store multiple files with different file names. Jira should move to an improved and modern system, such as storing the files in a single large resolution file like SVG and letting the user browse to resize the files accordingly to where they are being displayed.