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Why are my iPhone photos HEIC (and not JPG)?

You go to open a photo from your iPhone on your computer and it has a strange extension: .heic. It won’t open the way your other pictures do. You didn’t choose this format and may never have heard of it. So why is it there?

The short answer: since iOS 11 in 2017, Apple has saved iPhone and iPad photos as HEIC by default because it fits far more photos into the same storage. Here’s the fuller story, and what to do about it.

What HEIC actually is

HEIC stands for High Efficiency Image Container. It’s Apple’s use of a broader standard called HEIF, which stores a still image compressed with HEVC — the same technology behind high-efficiency 4K video. The point of all that engineering is compression: HEIC holds a photo at roughly half the file size of a comparable JPG, with equal or slightly better quality.

It also carries extras JPG can’t:

  • Live Photos — a short burst of motion around the still frame
  • Depth maps — the data behind Portrait mode’s background blur
  • Wider colour — more shades, for richer-looking images
  • Bursts and sequences in a single container

For a camera that shoots constantly and syncs everything to iCloud, halving the storage each photo needs is a big, quiet win. That’s the whole reason Apple made the switch.

Why it catches people out

The trouble is that the rest of the computing world didn’t switch with Apple. JPG remains the universal language of photos, and plenty of places still don’t speak HEIC:

  • Windows needs an extra (free) codec from the Microsoft Store to preview .heic files.
  • Many Android phones and older devices can’t open them at all.
  • Website upload forms — job applications, government portals, print shops — often reject HEIC.
  • Some older photo editors and email clients simply don’t recognise it.

So a format designed to help you ends up feeling like an obstacle the first time you try to share a photo outside the Apple ecosystem.

Option 1: Tell your iPhone to shoot JPG instead

If HEIC causes you more hassle than it saves, you can switch back:

  1. Open Settings.
  2. Tap Camera, then Formats.
  3. Choose Most Compatible.

From then on your iPhone captures photos as JPG. They’ll take up more space, but they’ll open anywhere without conversion. Choose High Efficiency to go back to HEIC.

There’s also a helpful middle ground: even if you keep shooting HEIC, iPhones will often automatically convert to JPG when you share via AirDrop, Mail or Messages to a device that needs it. The .heic files usually only surface when you copy photos off the phone directly — for example, plugging into a Windows PC or exporting from iCloud.

Option 2: Keep HEIC and convert when you need to

Switching your camera to JPG means giving up the storage savings on every photo, forever, just to solve an occasional sharing problem. Often the smarter move is to leave the camera on HEIC and simply convert the specific photos you need to send.

Converting is quick — but where you convert matters. A lot of online converters upload your photo to their servers to do the job. For a casual snapshot that may be fine; for anything you’d rather keep to yourself, it means sending the file to a stranger’s computer.

A browser-based converter avoids that entirely. It does the conversion on your own device, so the photo never leaves it. You can even do it with Wi-Fi off. Pick the format that fits:

The converter at the bottom of this page works this way, with no upload and no limit on how many photos you convert at once.

Is HEIC a bad format?

No — it’s a genuinely good one. Technically it beats JPG on both size and quality, and its extra features enable things people love, like Portrait mode. The friction isn’t the format’s fault; it’s that adoption outside Apple has been slow. Over time more software will read HEIC natively and the problem will fade.

Until then, the practical stance is simple: let your phone use HEIC for storage, and convert copies to JPG when you need to share. You keep the benefits and skip the headaches. For the deeper comparison, see HEIC vs JPG; to understand the private, no-upload way to convert, see how to convert HEIC without uploading it.