Is there a way to increase the size of the mouse-over thumbnail size for Windows 7 task-bar items?

Ie, if I have multiple file explorers open and mouse-over them it would be nice to have larger, higher detailed thumbnails that were more indicative of the contents of each.

I do know that if you mouse-over them, the desktop shows you which one it is by fading the rest of the windows but I would still like to be able to increase the thumbnail size.

  1. Launch Regedit.exe and navigate to the following registry key:

  2. Create a DWORD value named MinThumbSizePx.

  3. Double-click MinThumbSizePx and set its value data accordingly. I set it to 350 (Decimal).

  4. Kill the Explorer task in the task manager and restart Explorer.

  • Very clean and works great. – Enigma Feb 7 '13 at 20:58
  • 3
    This works for Windows 8, 8.1 and 10 as well. – Ƭᴇcʜιᴇ007 Aug 17 '15 at 20:16
  • I used 600 for the value. Very nice manageable size. – Enigma Mar 3 '16 at 20:33

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