On Facebook, a timestamp accompanied by “1h” on a profile picture indicates that the image was uploaded or updated approximately one hour prior to the time it is being viewed. This notation provides a general sense of when the profile picture was most recently changed.
The timestamp feature allows users to understand the recency of content on the platform. It provides context regarding the profile picture’s relevance, whether it’s a recent photo reflecting the user’s current appearance or an older image. This information contributes to a user’s perception of the profile and its owner.