What Is HEIC Format? Why Apple Uses It and How to Handle It
HEIC is Apple's photo format since iOS 11. Here's why it exists, what makes it better than JPEG, and why it causes compatibility headaches.
If you've ever tried to share iPhone photos on a Windows PC or upload them to a website and run into errors, HEIC is likely the reason. Here's what the format actually is, why Apple uses it, and what to do about the compatibility issues.
What Is HEIC?
HEIC stands for High Efficiency Image Container. It's a file format based on the HEIF standard (High Efficiency Image File Format), which in turn uses HEVC (H.265) video compression to encode still images.
Apple introduced HEIC as the default photo format on iPhone and iPad starting with iOS 11 in 2017.
Why Does Apple Use HEIC Instead of JPEG?
Two main reasons: file size and quality.
HEIC typically produces files that are about half the size of an equivalent JPEG, at the same or better visual quality. For a phone that might take thousands of photos a year, that's a significant storage saving.
HEIC also supports features that JPEG doesn't:
- Greater color depth — up to 16-bit color (JPEG caps at 8-bit)
- HDR and wide color gamut — important for the vivid colors modern iPhone cameras capture
- Multiple images in one file — Live Photos and burst shots store their frames in a single HEIC file
- Depth maps and transparency — used for Portrait mode photos
The Compatibility Problem
Despite its technical advantages, HEIC adoption outside Apple's ecosystem has been slow.
What doesn't support HEIC natively:
- Windows (requires a codec download)
- Most Android devices
- Most web browsers (Chrome, Firefox, Safari on Windows)
- Many web forms and image upload fields
- Adobe Photoshop (older versions)
- Most printing services
What does support HEIC:
- All Apple devices (iPhone, iPad, Mac)
- Google Photos
- Modern versions of Windows 11 with the HEIF codec installed
- Some newer Android devices
How to Deal With HEIC Files
Option 1: Convert to JPG when needed. Use the HEIC to JPG converter to convert specific files before sharing or uploading. This is the quickest fix for one-off situations.
Option 2: Change iPhone to save as JPG. Go to Settings → Camera → Formats and select Most Compatible. Your iPhone will save new photos directly as JPEG. You lose some storage efficiency, but you gain universal compatibility.
Option 3: AirDrop or share via iCloud. When you AirDrop photos from iPhone to Mac, or share via Messages to another Apple device, the files often stay as HEIC. When you use Share → Save to Files or email to a non-Apple address, iOS can automatically convert to JPEG — look for the "Automatic" option in Settings → Camera → Formats.
HEIC vs JPEG: A Quick Comparison
| HEIC | JPEG | |
|---|---|---|
| File size | ~50% smaller | Larger |
| Color depth | Up to 16-bit | 8-bit |
| Transparency | Yes | No |
| Live Photos | Yes | No |
| Universal support | No | Yes |
| Introduced | 2017 | 1992 |
Frequently Asked Questions
Is HEIC better quality than JPEG? Yes, technically — HEIC achieves better quality at smaller file sizes. The problem is compatibility, not quality.
Will HEIC eventually replace JPEG everywhere? Possibly, but slowly. JPEG has had 30+ years of adoption. HEIC's licensing requirements slowed its adoption compared to free alternatives like WebP and AVIF.
Can I open HEIC files on Windows? Yes, after installing the free HEIF Image Extensions codec from the Microsoft Store. Alternatively, convert to JPG first using the HEIC to JPG converter.