If you find the preview size of the Taskbar thumbnails a little smaller, you can change them and make them bigger. There is a simple way to change the size of Windows 11/10/8/7 Taskbar Thumbnails.

You can change Thumbnail Preview Border in Windows 11/10 FIle Explorer to Miniature Photographs, No border, Straight, Photo or Shadow border.

On Windows 11, you can disable thumbnail previews for files and folders on File Explorer if they’re not working correctly, or you don’t want to use the feature, and you can do this through ...