Clearly communicate accepted file types

Indicate to users the accepted file types to let users know what they can upload before interacting. This can be done through helper text or placeholder content.

Provide immediate visual feedback

When a file is dragged over or dropped into the zone, provide the user with visual feedback such as highlighting the border or changing the background, to confirm the interaction is recognized.

Allow the user to replace file types

Visual styling that indicates a user can replace file types within a dropzone should clearly communicate interactivity and the potential for change without disrupting the overall layout. This is typically achieved through subtle but intuitive cues such as displaying a button over the drop zone area informing the user that they may replace their content type.