You can add an account photo, which will show in given tasks (whom they're given to), in shared lists (the owner), and in the forums.

To add or change your account photo:

1. Open the web app or desktop app.
2. Click on the 'Settings gear' at the top right.
3. Click on Account settings.
4. Locate the Photo section, and click the 'Change photo' button and select 'Upload photo'.
5. Select and confirm your photo.
6. Position your photo in the square and use the slider at the bottom to resize it, as applicable.
7. Click 'Done!' and enjoy your new account photo. :)

To remove your account photo:

1. Open the web app or desktop app.
2. Click on the 'Settings gear' at the top right.
3. Click on Account settings.
4. Locate the Photo section, and click the 'Change photo' button and select 'Remove'.