iPhone photos are saved as HEIC files that many devices and websites cannot open. Learn what HEIC is, why Apple uses it, and how to convert to JPG instantly.
You took a photo on your iPhone, emailed it to a colleague, and they cannot open it. Or you tried to upload it to a website and got an "unsupported format" error. Or you sent it to a Windows user and they see a blank file with a .heic extension they have never heard of.
This is one of the most common tech frustrations in 2026, and it has a simple cause: Apple uses a different image format than the rest of the world.
HEIC (High Efficiency Image Container) is Apple's default photo format for iPhones and iPads, used since iOS 11 in 2017. It is based on the HEIF (High Efficiency Image Format) standard, which uses the same compression technology as H.265 video.