Main Window - Thumbnail | Make from Clipboard                    Ctrl+Alt+F3

Thumbnail Popup Menu - Thumbnail | Make from Clipboard

 

 

Use this menu selection to make thumbnail(s) for the selected file(s) using the contents of the windows clipboard.

 

If you have Create persistent .tp_jptn files for thumbnails made from clipboard enabled under Main Window - Options | Preferences - Thumbnails, Thumbsplus will keep a copy of the thumbnail image (named with the .tp_jptn file extension)  in the same folder as the selected file. This allows ThumbsPlus to remake the thumbnail later.