Free online HEIC (HEIF) converter service to reduce the size of images without losing quality
High Efficiency Image Format (HEIF) is used in Apple's iPhone and will also be coming to Google's Android. It is a modern replacement for JPEG, often having the file extension .HEIC.
HEIF creates images with a smaller file size and higher image quality than the older JPEG standard. In other words, HEIF is just better than JPEG.
HEIF achieves this by using more advanced compression methods. This new image format is based on the High Efficiency Video Compression format, also known as HEVC or H.265.
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If you want to convert HEIC to JPG to avoid problems with not being able to open HEIC files, use the service "Convert HEIC to JPG, JPEG, PNG, WebP".