What Is a HEIC File?

HEIC (High Efficiency Image Container) is Apple's name for a still image stored using the HEIF standard, compressed with the HEVC (H.265) codec. In plain terms: it's a modern container that holds a photo — and often extra data like depth maps or Live Photo frames — very efficiently.

The key benefit is size. A HEIC photo is typically 40–50% smaller than the same photo saved as JPG, with no visible loss in quality. That's why Apple made it the default: your phone stores twice as many photos in the same space.

Since iOS 11 (2017), iPhones and iPads capture photos as HEIC whenever the camera is set to 'High Efficiency'. It saves storage and iCloud space while keeping full quality, and it supports features JPG can't, like 16-bit color and transparency.

You can switch your camera back to JPG under Settings → Camera → Formats → Most Compatible — but you'll use noticeably more storage.

HEIC is well supported on Apple devices and recent Windows and Android versions, but plenty of apps, older systems, web upload forms, and print services still don't accept it. That's the usual reason a HEIC photo 'won't open' — the software simply doesn't recognise the format.

The fix is to convert the file to a universally supported format: JPG for photos, or PNG when you need lossless quality or transparency.

On an iPhone, HEIC photos already open in Photos, and they're automatically converted to JPG when you share or email them. On Windows 10/11 you may need the free HEIF/HEVC extensions from the Microsoft Store to preview them.

The simplest cross-platform option is to convert. Our free HEIC to JPG and HEIC to PNG converters do it right in your browser — your photos are decoded locally and never uploaded to a server, so even private photos stay private.