How to make Windows 10 taskbar thumbnail previews bigger?

The window previews in Windows 10 are too small to make any informed decisions. How can I increase the size of the thumbnail preview?

Note: This is not a duplicate of Is there any way to make taskbar icons bigger in Windows 10? which is about taskbar icon size. This question is regarding the preview/thumbnail size.

Answer

You can do this without any external programs by modifying the registry. According this video on how to Make Windows 10 Taskbar Thumbnails Bigger:

1. Open registry - Win + R and type regedit


2. Go to path HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Taskband


3. Add new DWORD 32 Bit Value
   
   
   
   1. Key: MinThumbSizePx
   
   
   2. Value: Number of pixels anywhere less than 500
   
   
   
   


4. Restart Explorer with any of the following methods:
   
   
   
   1. Longest - Restart Computer
   
   
   2. Medium - Log off and then log back on
   
   
   3. Shortest -
      
      
      
      1. Ctrl + Shift + Right click on Taskbar
      
      
      2. Select 'Exit Explorer'
      
      
      3. Pull up Task Manager (Ctrl + Shift + Esc)
      
      
      4. File > 'Run New Task' > Type explorer
      
      
      5. Voila! You've restarted explorer