HEIC vs JPG: What's the Difference (and How to Convert)

If you've ever taken a photo on an iPhone and then tried to open it on a Windows PC, upload it to a website, or attach it somewhere that just refuses to accept it, you've run into HEIC. Here's what it actually is, why Apple uses it, and the easiest way to get a photo back into a format that works everywhere.

What is HEIC?

HEIC (High Efficiency Image Container) is the default photo format on iPhones running iOS 11 and later. It's Apple's implementation of HEIF (High Efficiency Image File Format), a modern image standard that uses much more efficient compression than older formats — typically the same visual quality as a JPEG at roughly half the file size. For a phone that's constantly taking photos and shipping with limited storage, that's a meaningful win: more photos fit in the same space, and less data gets used backing them up to iCloud.

So what's the problem?

The efficiency comes at a cost: compatibility. JPEG has been the universal image format since 1992 — every operating system, browser, photo editor, and upload form on the planet understands it without a second thought. HEIC is much newer, and support outside Apple's own ecosystem is inconsistent:

• Windows can open HEIC files, but often only after installing a separate extension from the Microsoft Store — it doesn't always work out of the box.
• Plenty of websites, upload forms, and older software simply reject `.heic` files outright, or fail silently instead of showing a useful error.
• Many non-Apple devices, and some older Android phones, can't display them at all.

None of this means HEIC is a bad format — it's genuinely better engineered than JPEG in most technical respects. It just hasn't caught up in adoption yet, so in practice you often need a JPEG copy to actually share or use the photo somewhere.

HEIC vs JPG at a glance

• File size: HEIC is typically about half the size of a JPEG at similar visual quality.
• Compatibility: JPEG works everywhere; HEIC mostly works within Apple's own devices and apps.
• Extra features: HEIC can store things like Live Photo data and image sequences in one file — capabilities JPEG doesn't have.
• Age: JPEG dates to 1992; HEIC arrived with iOS 11 in 2017, so tooling and support are still catching up.

How to convert HEIC to JPG

The simplest fix is converting the specific photos you need into JPG right when you need them — no need to change how your iPhone takes pictures. Our HEIC to JPG converter does exactly that: upload the file, and it comes back as a standard JPG that opens anywhere, no installation required.

If you'd rather avoid the problem going forward, your iPhone can also take photos in JPEG from the start: go to Settings → Camera → Formats and switch from "High Efficiency" to "Most Compatible." That trades a little storage space for photos that just work everywhere, with no conversion step needed later.