Starting with iOS 11, iPhones save images in HEIC file format by default. HEIC — High Efficiency Image Container — is technically impressive: it produces photos with about half the storage of equivalent JPEGs maintaining great image quality.
But there is a important problem. HEIC is an Apple-specific format that is not broadly compatible outside the Apple environment. Windows PCs, non-Apple phones and most web platforms do not support HEIC photos without special programs.
Transforming HEIC to JPG is the essential process that makes iPhone pictures usable on all devices. Common scenarios needing conversion involve sending iPhone photos to Windows users, more info adding images to online platforms incompatible with HEIC.
Mac users have the easiest conversion path. Open the HEIC file in Preview, go to File, then Export and select JPEG as the format.
For Windows users, online conversion tools handle HEIC to JPG conversion without any software installation. Select the HEIC image and save the converted JPG.
Use alljpgconverters.com offering a completely free web-based HEIC to JPG tool with no download needed.