The author transitioned from Windows to Mac and discovered macOS features like Spotlight Search, Hot Corners, a built-in file converter, and QuickLook, which enhanced their user experience. Upon returning to Windows, they sought alternatives and found the QuickLook app, which allows users to preview files by selecting them and pressing the space bar. QuickLook can be downloaded from the Microsoft Store and operates system-wide, enabling previews of various file types, including documents, images, media files, and compressed ZIP files. The app also allows basic modifications, such as editing text in Word documents and cropping images. QuickLook improves file browsing in Windows File Explorer and Open/Save dialog boxes and supports plugins for specialized file types.