Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
iMazing HEIC Converter - iMazing HEIC converter is a free Mac and PC app which converts photos from HEIC to JPEG or PNG.
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.
Kingshiper HEIC to JPG Converter - Kingshiper HEIC to JPG Converter is an easy-to-use tool that converts HEIC photos to JPG, or other formats with 3 simple steps.
JPEGmini - JPEGmini - The Photo Optimization Tool Trusted by Tens of Thousands Image Perfectionists
Aiseesoft HEIC Converter - Aiseesoft HEIC Converter is a useful tool that converts photos from HEIC to JPG/JPEG or PNG. You can open iPhone HEIF images on non-Apple devices conveniently.