What Is a HEIC File? The Complete Guide to Apple's Image Format

What Is a HEIC File?

HEIC stands for High Efficiency Image Container. It's a file format based on the HEIF (High Efficiency Image Format) standard, which was developed by the Moving Picture Experts Group (MPEG). Apple adopted HEIC as the default photo format for iPhones and iPads starting with iOS 11 in 2017. If you see a photo with the .heic extension, it almost certainly came from an Apple device.

HEIF vs HEIC: What's the Difference?

The two terms are often confused. HEIF is the container standard (like a family of formats), while HEIC is the specific variant that stores images compressed with the HEVC (H.265) codec — it's the one Apple uses. In practice, a .heif and a .heic file behave the same way, and any tool that opens one usually opens the other.

Why Does Apple Use HEIC?

Apple chose HEIC for several compelling reasons:

Superior Compression

HEIC files are approximately 50% smaller than equivalent JPEG files while maintaining the same visual quality. This means your iPhone can store roughly twice as many photos in the same amount of storage space.

Better Image Quality

At the same file size, HEIC produces noticeably better image quality than JPEG. This is because HEIC uses more advanced compression algorithms (based on HEVC/H.265 video codec) that are better at preserving fine details and reducing compression artifacts.

Advanced Features

HEIC supports features that JPEG cannot:

• 16-bit color depth (vs JPEG's 8-bit), allowing for smoother gradients and more accurate colors
• Transparency (alpha channel support)
• Multiple images in a single file (Live Photos, burst shots, image sequences)
• Non-destructive editing — edits can be stored alongside the original image
• Depth maps for Portrait Mode photos

The Compatibility Problem

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

• Windows: Windows 10/11 requires installing the HEIF Image Extensions from the Microsoft Store (sometimes paid)
• Android: Most Android devices cannot open HEIC files natively
• Web Browsers: No major browser can display HEIC files directly
• Social Media: Most platforms convert HEIC to JPEG during upload, but some may reject HEIC files
• Email: HEIC attachments may not preview correctly for recipients

How to Open HEIC Files

On Mac

macOS has native HEIC support. Simply double-click the file to open it in Preview. You can also use Photos, Pixelmator, or any modern Mac image editor.

On Windows

You have several options:

• Install the HEIF Image Extensions from the Microsoft Store
• Use a free converter like OpenMyHEIC.com to convert to JPG
• Use third-party software like IrfanView or GIMP

On Any Device

The easiest universal solution is to use an online converter like OpenMyHEIC.com. It works in any web browser and converts your files instantly without uploading them to any server.

HEIC vs JPEG: Detailed Comparison

Should You Keep Photos as HEIC?

For storage on your iPhone, HEIC is the best choice — it saves space while maintaining quality. However, when sharing photos with others or using them on non-Apple platforms, converting to JPG or PNG is recommended.

How to Stop iPhone from Taking HEIC Photos

If you prefer your iPhone to shoot in JPEG:

• Open Settings
• Tap Camera
• Tap Formats
• Select Most Compatible

This will make your iPhone save photos as JPEG instead of HEIC. Note that this will use approximately twice the storage space.

Convert HEIC Files Easily

Ready to convert your HEIC files? Use our free HEIC to JPG converter — it's instant, private, and works right in your browser. No upload needed, no account required.