CopyTrans HEIC for Windows - A plugin that lets you view HEIC photos on Windows and convert them to JPG by right-clicking.
XnView MP - XnView is a free software that allows you to view, resize and edit your images. It supports more than 500 different formats!
iMyFone HEIC Converter - iMyFone HEIC converter can convert your iPhone's HEIC photos to JPEGs on your computer without...
JPEGView - JPEGView is a small and fast viewer/editor for JPEG, BMP, PNG, GIF and TIFF images.
IrfanView - IrfanView ... one of the most popular viewers worldwide.
Heic File Converter - Free Software to Convert HEIC File to JPG / PNG / PDF