What is HEIC?

If you've ever transferred photos from an iPhone to a Windows PC, you've probably encountered mysterious .heic files that won't open. Or perhaps you tried to upload iPhone photos to a website only to get an "unsupported format" error.

HEIC is Apple's default photo format, and while it offers impressive benefits, it can cause real headaches when you need to share photos with non-Apple devices. This guide explains everything you need to know about HEIC: what it is, why it exists, and how to work with it.

What is HEIC/HEIF?

HEIC stands for High Efficiency Image Container. It's Apple's implementation of the HEIF (High Efficiency Image File Format) standard, which was developed by the Moving Picture Experts Group (MPEG) in 2015.

The format is based on the same compression technology used in HEVC (H.265) video, which is why it's so efficient at reducing file sizes. When you take a photo on a modern iPhone, it's saved as HEIC by default unless you've changed your settings.

HEIC vs HEIF: What's the Difference?

HEIF is the broader standard that defines how images are stored. HEIC is Apple's specific implementation that uses HEVC compression. In practice, the terms are often used interchangeably, and both refer to files with .heic or .heif extensions.

Why Does Apple Use HEIC?

Apple adopted HEIC in 2017 with iOS 11 for several compelling reasons:

1. Dramatically Smaller File Sizes

HEIC files are approximately 50% smaller than equivalent JPG files at the same quality level. This means:

• More photos fit on your iPhone
• Faster iCloud backups
• Less storage space used overall

2. Better Image Quality

At the same file size, HEIC produces noticeably better image quality than JPG. This is especially visible in areas with gradual color transitions, like skies and skin tones.

3. Advanced Features

HEIC supports features that JPG cannot:

• Depth maps for Portrait mode photos
• Live Photos (image + video in one file)
• HDR imaging data
• Multiple images in a single file (bursts)
• 16-bit color depth

The Compatibility Challenge

Despite its advantages, HEIC has one major drawback: limited compatibility. Many devices and applications still don't support HEIC natively.

Where HEIC Doesn't Work

• Windows - Requires installing a free codec from Microsoft Store
• Android - Support varies by device and Android version
• Older web browsers - Most browsers can't display HEIC directly
• Many websites - Including some social media platforms
• Email attachments - Recipients may not be able to open them
• Print services - Most require JPG or PNG

How to Work with HEIC Files

You have several options for dealing with HEIC compatibility issues:

Option 1: Convert HEIC to JPG (Recommended)

The easiest solution is to convert HEIC files to JPG when you need to share them. Use our HEIC to JPG converter - it's free, instant, and completely private (files never leave your device).

For a detailed walkthrough, see our step-by-step HEIC to JPG guide.

Option 2: Change iPhone Settings

You can configure your iPhone to capture photos in JPG instead of HEIC:

1. Open Settings
2. Scroll down and tap Camera
3. Tap Formats
4. Select Most Compatible (this uses JPG)

Note: This will result in larger photos taking up more storage space.

Option 3: Install HEIC Codecs

On Windows 10/11, you can install the "HEIF Image Extensions" from the Microsoft Store to view HEIC files natively. However, this doesn't help when sharing files with others or uploading to websites.

Choosing the Right Output Format

When converting HEIC, you have several format options:

• JPG - Best for sharing, maximum compatibility. See our HEIC to JPG guide.
• PNG - Best for quality preservation and transparency.
• WebP - Best for web use, excellent compression.

Not sure which to choose? Read our complete format comparison guide.

Conclusion

HEIC is Apple's efficient image format that saves storage space while maintaining excellent quality. While it offers real advantages, its limited compatibility means you'll often need to convert HEIC files to JPG or PNG when sharing with non-Apple users or uploading to websites.

The good news? Converting HEIC is quick and easy with the right tools.