Use Logo Shape to tell HeySummit whether a sponsor logo is wide or square. This helps square artwork use suitable padding in standard sponsor lists.
Go to Sponsors > All Sponsors.
Open Actions > Manage Sponsor and choose Media.
Set Logo Shape to Default (Wide) or Square.
Select Save.
Choose Square for artwork closer to a square than a horizontal rectangle. Standard shape-aware sponsor cards use tighter padding for it. This setting does not resize the uploaded file. Overall size also depends on the display: legacy lists use the event theme's primary/supporting logo sizes, while website sponsor components with their own Logo size and frames use those controls. See Change sponsor logo size.