What Is HEIC and Why iPhone Uses It
What Is HEIC?
HEIC (High Efficiency Image Container) is an image format that uses HEVC (H.265) video codec for compression. Apple adopted HEIC as the default photo format for iPhones starting with iOS 11 in 2017.
HEIC files are significantly smaller than JPG files — typically 40-50% smaller at the same quality level. This means more photos fit in the same storage space.
Why iPhone Uses HEIC
Apple switched to HEIC for several practical reasons:
Storage Savings
HEIC files are about half the size of equivalent JPG files. For a 64GB iPhone, this effectively doubles your photo storage capacity.
Better Quality
HEIC supports 16-bit color depth (vs JPG's 8-bit), meaning smoother gradients and better color accuracy, especially in photos with subtle color transitions.
More Features
HEIC stores additional data in one file: the main image, editing adjustments, depth information for portrait effects, and Live Photo data.
Modern Compression
HEVC compression is more efficient than the decades-old JPG compression algorithm, delivering better results with less data.
HEIC vs JPG
| Feature | HEIC | JPG |
|---|---|---|
| File Size | 40-50% smaller | Larger |
| Color Depth | 16-bit | 8-bit |
| Transparency | Yes | No |
| Multiple Images | Yes (Live Photos, edits) | No |
| Compatibility | Limited | Universal |
HEIC Compatibility Issues
Despite its advantages, HEIC has compatibility limitations:
Windows
Windows 10 and 11 can open HEIC files, but you may need to install the HEIF extensions from the Microsoft Store. Older Windows versions cannot open HEIC natively.
Android
Android 9 and later support HEIC, but many Android devices still use JPG by default. Some apps may not display HEIC correctly.
Web Browsers
Most browsers don't support HEIC natively. HEIC images won't display on websites without conversion.
Software
Many photo editors, document systems, and legacy applications don't support HEIC. You'll need to convert before using HEIC photos in these programs.
Sharing HEIC photos: When you share photos directly from iPhone, iOS automatically converts HEIC to JPG for Messages and most apps. However, AirDrop, email attachments, and file transfers may keep the HEIC format.
When to Convert HEIC to JPG
You need to convert HEIC to JPG when:
- Uploading to websites — Most web forms only accept JPG/PNG
- Sharing with Windows users — They may not have HEIC support
- Using photo editing software — Many editors don't open HEIC
- Creating documents — Word, PowerPoint, and PDFs work better with JPG
- Email attachments — Ensures all recipients can view the images
How iPhone Handles HEIC
Your iPhone has settings that control HEIC behavior:
Settings → Camera → Formats
- High Efficiency — Uses HEIC for photos, HEVC for videos (default)
- Most Compatible — Uses JPG for photos, H.264 for videos
Settings → Photos → Transfer to Mac or PC
- Automatic — Converts HEIC to JPG when transferring (recommended)
- Keep Originals — Transfers HEIC files without conversion
Converting HEIC to JPG
For times when you need JPG, use our HEIC to JPG converter to quickly convert your iPhone photos. The tool preserves image quality while creating universally compatible JPG files.
You can also convert HEIC to PNG using our HEIC to PNG tool if you need transparency support.
Common Questions
Is HEIC better than JPG?
Technically, yes — HEIC offers better compression and quality. Practically, JPG is more compatible. Use HEIC on your iPhone for storage savings, convert to JPG when sharing.
Will converting HEIC to JPG lose quality?
There's minimal quality loss during conversion. The difference is usually not visible unless you zoom in significantly or edit the photo heavily.
Can I change my iPhone to shoot JPG instead?
Yes, go to Settings → Camera → Formats and select "Most Compatible." Your iPhone will then capture JPG photos instead of HEIC.