ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Core Namespace / Item Class / ThumbnailPath Property

ThumbnailPath Property (Item)
Gets and sets a path to a thumbnail that describes and helps to identify the item. Derived from the Thumbnail that is extracted from the item's metadata.
Syntax
public string ThumbnailPath {get;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also