New
#1
There seems to be a minimum size which is pre-defined, you cannot make it smaller. The preview and details pane size is set by the DetailsContainerSizer binary value in the Registry key:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Modules\GlobalSettings\Sizer
I do not know of way to make the thumbnail larger in the details pane. It is larger in the preview pane.
I know it is larger in preview pane but I need to see also the file details info on the same pane, thank you