HEIC vs JPG: What iPhone Users Need to Know
If you have ever tried to share an iPhone photo and run into a "format not supported" error, you have encountered the HEIC problem. Here is everything you need to understand about it.
What Is HEIC?
HEIC stands for High Efficiency Image Container. It is a file format based on the HEIF (High Efficiency Image File Format) standard, developed by the Moving Picture Experts Group (MPEG). Apple adopted HEIC as the default photo format starting with iOS 11 in 2017, and every iPhone since the iPhone 7 saves photos in this format by default.
The "high efficiency" part is not marketing fluff. HEIC files are roughly 50% smaller than equivalent JPG files at the same visual quality. For a device that stores thousands of photos, that difference is significant. A 3 MB JPG might only be 1.5 MB as HEIC, which means you can store roughly twice as many photos in the same amount of storage.
Why Did Apple Switch to HEIC?
Apple had several compelling reasons to make the switch:
- Storage savings: With users taking more photos and recording more video than ever, reducing file sizes by half has a real impact on how long it takes to fill up a 128 GB or 256 GB phone.
- Better quality per byte: HEIC uses more advanced compression algorithms than JPEG, which dates back to 1992. At the same file size, HEIC preserves more detail, especially in areas with gradients and subtle color transitions.
- Modern features: HEIC supports 16-bit color depth (vs. 8-bit for JPG), transparency, image sequences (Live Photos), and depth maps. JPG supports none of these natively.
- iCloud efficiency: Smaller files sync faster over cellular and Wi-Fi connections, reducing both bandwidth and iCloud storage costs.
The Compatibility Problem
Despite its technical advantages, HEIC has a significant practical problem: most of the non-Apple world does not natively support it. Here is where you will run into trouble:
- Windows: Windows 10 and 11 can open HEIC files, but only after installing the HEIF Image Extensions from the Microsoft Store. Many users never do this and are left confused by files they cannot open.
- Web browsers: Safari supports HEIC. Chrome, Firefox, and Edge do not display HEIC files natively.
- Social media and websites: Many upload forms, content management systems, and web applications do not accept HEIC files. You will often see an error when trying to upload one.
- Older software: Photo editors, document tools, and email clients released before 2018 generally have no HEIC support.
- Android: While newer Android versions (12+) have added HEIC support, many Android apps and older devices still cannot handle the format.
How to Handle HEIC Files
Option 1: Change Your iPhone Settings
You can tell your iPhone to save photos as JPG instead of HEIC. Go to Settings > Camera > Formats and select Most Compatible. This switches the camera to JPG for photos and H.264 for video. The trade-off is larger file sizes and missing out on features like 10-bit HDR capture.
Option 2: Let Apple Convert on Transfer
Under Settings > Photos, you can enable Automatic transfer mode. When you AirDrop, email, or share photos to non-Apple devices, iOS will automatically convert them to JPG. This works well for casual sharing but does not help when you are working with files you have already downloaded or synced.
Option 3: Convert When You Need To
The most flexible approach is to keep shooting in HEIC (for the storage and quality benefits) and convert individual photos when compatibility is needed. This is where a reliable converter tool comes in.
Convert HEIC Photos Instantly
Our converter processes HEIC files entirely in your browser. Your photos never leave your device, so there are no privacy concerns with personal images.
HEIC vs JPG: Quick Comparison
| Feature | HEIC | JPG |
|---|---|---|
| File size | ~50% smaller | Larger at same quality |
| Color depth | 16-bit | 8-bit |
| Transparency | Supported | Not supported |
| Compatibility | Apple ecosystem primarily | Universal |
| Live Photos | Supported | Not supported |
| Web browser support | Safari only | All browsers |
| First released | 2015 (Apple adopted 2017) | 1992 |
The Bottom Line
HEIC is a genuinely superior format from a technical standpoint. It produces smaller files with better quality and supports modern features that JPG simply cannot match. The only real downside is compatibility, and that gap is slowly closing as more software adds HEIC support.
For most iPhone users, the best strategy is to keep the default HEIC setting and convert to JPG or PNG only when you need to share with someone or something that does not support HEIC. That way you get the storage savings on your device and universal compatibility when you need it.
Need to convert HEIC files right now? Try our free HEIC to JPG or HEIC to PNG converter. All processing happens in your browser — your photos stay on your device.