Backup Spotlight Images to Desktop contains a Powershell Script to backup only your larger, 1920x1080 Spotlight images.
One problem with backing up the folder is that you back up all sorts of icons, including Dolby, Xbox, and more that you don't need. Because of this, we can use a Powershell script that will only back up your 1920x1080 images, or you can manually browse and copy the files.
The Powershell script will automatically copy all the 1920x1080 images to a SpotlightImages folder on your Desktop.
Download the PowerShell script. Right-click and choose Run with PowerShell.
Open the SpotlightImages folder on your Desktop. That's it!