By default, Matter uses the profile photo from your Slack or Microsoft Teams connected account.
For everything on this topic, see the Workspace admin collection.
Change Matter Profile Photo
Open the Web App.
Go to Account Settings, then the General section.
Under the Profile Photo section, hit Upload Image. Add in your profile photo.
Square 512x512px images with a transparent background work best.
Click Save in the crop window to confirm the changes.

