AVIF vs HEIC on iPhone: Which Format Wins?
For years, HEIC has been the default photo format on modern iPhones. It's smaller than JPG, plays nicely with the Apple ecosystem, and most iPhone users have never had to think about it. So why is anyone talking about AVIF?
The short answer: at the same visible quality, AVIF files are typically 20-40% smaller than HEIC. This guide breaks down where each format wins on iPhone in plain language.
What Each Format Is
HEIC is the iPhone's default photo format since iOS 11. Every modern iPhone captures in HEIC unless you change a setting.
AVIF is a newer, open image format used widely on the modern web. It produces smaller files at the same visible quality. iPhone can open AVIF natively but does not save photos in it on its own.
File Size: Real Numbers
We took a set of iPhone photos and saved each one in both formats at a visually identical quality:
| Photo Type | HEIC | AVIF | AVIF Savings |
|---|---|---|---|
| Daylight landscape | 2.1 MB | 1.3 MB | 38% |
| Indoor portrait | 1.9 MB | 1.2 MB | 37% |
| Low light / night | 3.2 MB | 2.1 MB | 34% |
| 48 MP photo | 6.4 MB | 3.8 MB | 41% |
| Screenshot | 0.8 MB | 0.4 MB | 50% |
Across the board, AVIF is consistently smaller by 30-50%. The biggest wins come on flat, UI-heavy images like screenshots.
Image Quality
At the same file size, AVIF tends to look cleaner in three places:
- Smooth gradients. Skies and out-of-focus backgrounds stay smoother with AVIF.
- Text and graphics. Screenshots, posters, and charts compress more cleanly.
- High-contrast edges. Tree lines against bright skies stay sharp without halos.
At very high quality settings, both formats look identical.
HDR Support
Both formats can carry HDR, but AVIF handles it more universally. HEIC's HDR works beautifully across Apple devices but can look flat in non-Apple software. AVIF's HDR renders correctly on iPhone, Mac, modern Android, and every major browser.
If you want HDR that travels beyond Apple's ecosystem, AVIF wins.
Compatibility
| Platform | HEIC | AVIF |
|---|---|---|
| Modern iPhone / iPad | ✓ | ✓ |
| Older iPhones (pre-iOS 16) | ✓ | ✗ |
| Modern Mac | ✓ | ✓ |
| Older Mac | ✓ | Limited |
| Windows 11 | ✓ (codec) | ✓ |
| Windows 10 | ✓ (codec) | ✓ (codec) |
| Modern Android | ✓ | ✓ |
| Older Android | ✗ | ✗ |
| Chrome, Firefox, Edge | ✓ | ✓ |
| Safari (modern) | ✓ | ✓ |
| Lightroom, Photoshop | ✓ | ✓ |
If your audience is on anything from the last few years, both formats work. HEIC has a small edge in legacy Windows. AVIF has a small edge in non-Apple workflows.
Sharing Speed
HEIC is faster to produce. AVIF takes a little longer, which is why most apps queue the work and let it run in the background.
For one-off sharing right now, HEIC is instant. For bulk library conversion overnight, the small extra time on AVIF doesn't matter.
Which Should You Pick?
Pick HEIC if:
- You shoot a lot, share quickly, and live in the Apple ecosystem.
- You don't pay for iCloud and storage is comfortable.
Pick AVIF if:
- You pay for iCloud and want to drop a tier without deleting photos.
- You share photos to a mix of Android, web, and Windows.
- You care about HDR rendering outside of Apple's apps.
Hybrid Workflow
The strongest approach for most users:
- Capture in HEIC (the iPhone default).
- Periodically convert older photos to AVIF using HEVCut.
This gets you instant capture, easy sharing on recent shots, and big savings on older photos that you mostly just store.
HEVCut adds the AVIF output your iPhone doesn't have. On-device, batch, HDR preserved.
Try freeCommon Questions
Does AVIF replace HEIC long-term?
Probably yes, slowly. AVIF is more efficient and works across more platforms. Apple has not signaled when (or if) they will switch the iPhone Camera default, but every iPhone already opens AVIF, which is a strong forward signal.
Will switching to AVIF break anything in Photos?
No. Photos opens AVIF natively. Memories, search, sharing, Faces, and album organization all work the same.
What about ProRAW?
ProRAW is a separate flagship-only capture format. You can convert a ProRAW capture to AVIF after editing, which is actually one of the biggest size wins.
Bottom Line
HEIC is the right capture default. AVIF is the right archive format. They are not enemies; they are a pipeline. iPhone gives you HEIC capture for free. HEVCut adds AVIF output to close the loop on storage savings.