Since iOS 11, iPhones have saved pictures in HEIC file format by default setting. HEIC — Apple's HEIC format — is highly efficient: it generates photos with about half the storage of comparable JPEGs while keeping great image quality.
However there is a significant issue. HEIC is an Apple-specific file type which is not widely supported outside the Apple devices. Windows computers, Android phones and most web platforms cannot display HEIC photos with no additional software.
Transforming HEIC to JPG is the necessary step making iPhone pictures compatible everywhere. Common scenarios needing conversion are sending iPhone photos to non-Apple users, adding images to websites incompatible with HEIC.
People with Macs have the easiest method. Open the HEIC photo in Preview, go to File, then Export and pick JPEG as the format.
Windows PC users, web-based converters process HEIC to JPG conversion without any downloads. Select the HEIC image and get the converted JPG.
Use alljpgconverters.com providing completely free online HEIC to JPG converter without download here required.