Why are iPhone photos HEIC?
And what to do about it.
Apple has saved photos as HEIC since iOS 11 — smaller files, better color. It's also why your Windows PC and half the upload forms you use complain. Here's the whole story, short.
Short answer: HEIC is Apple's default because it stores the same photo at roughly 20–30% less size than JPG. Keep it for your own storage; convert to JPG (or PNG) when sending photos to Windows, older apps, or upload portals that reject .heic.
By the Tool Pantry team, October 2026. Size comparison measured on a 1440×2200 test image: 165.6 KB as HEIC, 212.0 KB as JPG at 85% quality.
What HEIC actually is
HEIC is a container — like a box — holding an image compressed with HEVC, the same codec family that makes 4K video manageable. Apple switched the iPhone camera to it in 2017 (iOS 11), and the reasons were practical: about half the storage for the same visual quality, better color depth, and room for extras like Live Photo motion in the same file.
On an iPhone, everything works. The trouble starts the moment the photo leaves the garden: Windows needs a separate codec to even preview it, plenty of older apps refuse it, and upload portals — job applications, school forms, visa sites — very often list .heic as unsupported.
The size argument, with our numbers
We took one 1440×2200 image and saved it both ways. As HEIC it weighed 165.6 KB. As a JPG at 85% quality — the usual "looks identical" setting — 212 KB. Same picture, about 22% smaller in HEIC. On real camera photos with more detail, the gap is often wider; that's the storage win Apple is after.
Flip it around and you get the compatibility cost: converting to JPG usually makes the file bigger, not smaller. If you're converting to fit an upload limit, drop the JPG quality — at 60% our test image came out at 146.9 KB, and on a screen you'd struggle to tell.
Your three options, honestly ranked
- Keep HEIC, convert on demand. Best storage, zero downside until something can't open the file — then convert that one photo with HEIC to JPG (a browser tool, nothing to install).
- Switch the camera to Most Compatible. Settings → Camera → Formats. Photos become JPGs everywhere, forever. The cost: your camera roll takes noticeably more space.
- Convert everything after the fact. The worst option — you keep two copies of everything and manage neither well. Don't do this one.
When to convert, in one line each
- Sending to a Windows PC or older Android: convert to JPG, 85%.
- Editing in Photoshop or a lossless pipeline: HEIC to PNG.
- Submitting to a portal that caps size: convert at 60–75%.
- Keeping your own archive: leave HEIC alone. It's the master copy.
For the walkthrough on a PC specifically — including why you can skip the Microsoft Store codec — see HEIC to JPG on Windows.
Is HEIC better than JPG?
For storage and image quality per byte, yes. For compatibility, no. Same photo, roughly 20–30% smaller as HEIC in our test — but plenty of apps and forms still can't open it.
Does converting to JPG lose quality?
Slightly — JPG is a lossy format. At 85% quality it is essentially invisible in normal viewing. Keep the original HEIC as your master copy.
Can I make my iPhone save JPGs instead?
Yes: Settings → Camera → Formats → Most Compatible. The cost is storage — photos take noticeably more space, which is the reason Apple switched to HEIC in the first place.
Why won't Windows open my photos?
Windows needs the HEIF Image Extensions codec to decode HEIC. The Microsoft Store offers it, sometimes for a small fee. A browser converter avoids the install entirely.