Facebook does not provide a direct notification when another user saves a photo posted by an individual or on a public page. The platform lacks a feature designed to alert a user when their image has been saved by someone else. Consequently, content creators generally remain unaware when their visual content is downloaded or stored by other users.
The absence of such a notification mechanism stems from privacy considerations and the immense volume of activity on the platform. Enabling such alerts would likely generate an unmanageable number of notifications for users with popular content, potentially impacting user experience. Furthermore, disclosing this information could raise concerns regarding user privacy and data security.