XnView supports EXIF rotation (it shows images in portrait or landscape, per camera instructions).
XnView supports HEIC file format (the one Apple uses on current iPhones)
Layout Notes: Click the horizontal or vertical arrows to open and close panels. The "main" image panel is often hidden when you first select layouts, for some reason.
Read Ahead Option: Options - View - Misc (tab) - Cache (group) - Read One Image Ahead
tags: xnview, image, jpeg