The modern photo format High Efficiency Image Codex, HEIC for short, is intended to replace the JPG format for photos. The advantages of HEIC and HEIF are higher quality, not pixelated and more flexible to use. In order to be able to view HEIC files on a Windows computer, expensive programs are required to display the format. Why not just convert lossless to JPG? The iDevice Manager does just that for free.