HEIC (High Efficiency Image Container) is an image format used by Apple/iOS that stores photos more efficiently than JPEG and can hold multiple images (Live Photos) and metadata.
How to Convert HEIC Files to Other Formats heic image viewer windows 11
Fix: You installed the wrong extension. Uninstall "HEVC Video Extensions" and ensure you have "HEIF Image Extensions" installed. Restart your PC. HEIC Image Viewer for Windows 11 — Quick
ImageGlass: A modern, open-source image viewer that supports over 80 formats, including HEIC. Open the Microsoft Store from your taskbar or Start menu