Windows Explorer is able to display files and folders using various methods. One of these methods uses thumbnails. Windows Explorer can extract thumbnails from images, Pdfs, some videos and some Microsoft Office files.ApinSoft Files Thumbnail Extracter is a handy tool that will help you batch extract these files shumbnails and save to local hard disk. So that you can use these images for other purpose later.
Its feature include where it can export many common image format: such as BMP,JPG, JPEG, TNG, GIF,you can setup image size from 52 to 256 pixels depend on what your need and you can export multiple file thumbnails at one time.