What is HEIC? A Complete Guide to Apple's Image Format
If you've ever tried to share an iPhone photo and been told the format isn't supported, you've encountered HEIC. Here's everything you need to know.
Quick Answer
HEIC (High Efficiency Image Container) is Apple's default photo format since iOS 11. It stores photos at half the file size of JPG with equal or better quality. The downside: it's not universally supported on Windows, Android, and older software. Converting to JPG solves compatibility issues instantly.
The Origin of HEIC
HEIC is based on the HEIF standard (High Efficiency Image Format), developed by the Moving Picture Experts Group — the same organization that created MP3 and MP4. The standard was finalized in 2015, and Apple adopted it for iPhones and iPads with iOS 11 in September 2017.
The "container" in HEIC means the file can hold multiple images, metadata, depth maps, and even short video clips — all in one file. This is how iPhone stores Live Photos (a still + a short video clip) and Portrait mode photos (image + depth data) in a single compact file.
Under the hood, HEIC uses HEVC (H.265) for image compression — the same codec used in 4K video streaming. This is why it achieves such dramatic compression improvements over the 1990s-era JPEG algorithm.
How HEIC Compression Works
Traditional JPEG uses discrete cosine transform (DCT) — a mathematical technique from the 1970s — to compress images. It divides the image into 8×8 pixel blocks and discards fine detail. This works well but shows visible "artifacts" (blurry edges, color banding) at high compression.
HEVC/HEIC uses a more sophisticated approach with variable block sizes (4×4 up to 64×64 pixels) and advanced prediction algorithms that look at surrounding image data. The result: the same visual quality in roughly half the file size.
For a typical iPhone 15 photo at 12 megapixels:
- HEIC: approximately 3–5 MB
- JPG (equivalent quality): approximately 6–10 MB
- PNG (lossless): approximately 18–30 MB
HEIC Pros and Cons
Advantages
- ✓50% smaller file size vs JPG at equal quality
- ✓Supports 16-bit color depth (vs JPG's 8-bit)
- ✓Stores multiple images in one file (Live Photos)
- ✓Supports transparency and HDR content
- ✓Contains depth maps for Portrait mode
- ✓Native support on Apple devices (seamless)
Disadvantages
- ✗Not natively supported on older Windows versions
- ✗Android support is inconsistent (varies by app)
- ✗Many websites reject HEIC uploads
- ✗Most social media platforms don't accept HEIC
- ✗Older image editors can't open HEIC files
- ✗Patent licensing creates adoption barriers
How to Open HEIC Files on Any Device
HEIC files open natively in Preview, Photos, and most Mac apps since macOS High Sierra (2017). Just double-click the file.
Install the free 'HEVC Video Extensions' from the Microsoft Store. After that, the Photos app opens HEIC files. Alternatively, convert to JPG with ConvertHEIC.org.
HEIC is the native format — all iOS apps open HEIC files seamlessly. No action needed.
Android 12+ supports HEIC in Google Photos. For older Android versions, convert to JPG first using ConvertHEIC.org on your Android browser.
Install the libheif library and heif-convert tool. Or use GNOME's image viewer (with the heif plugin). Alternatively, use ConvertHEIC.org in Firefox or Chrome.
Frequently Asked Questions
What is HEIC?
What does HEIC stand for?
Why does my iPhone save photos as HEIC instead of JPG?
Is HEIC better quality than JPG?
Why can't I open HEIC files on Windows or Android?
How do I open a HEIC file on Windows?
Can I turn off HEIC on iPhone and shoot in JPG instead?
What is the difference between HEIC and HEIF?
Need to Convert HEIC to JPG?
Free, instant, and 100% private. Your photos never leave your device.
Convert HEIC to JPG NowSearch intent
What is HEIC search intent
This page is written for users who found a HEIC file and need a plain-English explanation. The core two-word phrase is HEIC format, while the main long-tail phrase is what is HEIC. HEIC format is Apple's compact photo container for iPhone images; the short answer to what is HEIC is that it saves space but is less universal than JPG.
When this page should rank
- HEIC format: learn why an iPhone photo is not JPG.
- HEIC format: compare HEIC format with JPG before changing camera settings.
- HEIC format: understand why Windows or Android may not open the file.
- HEIC format: decide when converting HEIC to JPG is worth it.
Practical checks before converting
- what is HEIC: HEIC saves storage on Apple devices.
- what is HEIC: JPG is easier to share everywhere.
- what is HEIC: HEIC can contain metadata and advanced image features.
- what is HEIC: conversion creates a compatible copy, not a better original.
What is HEIC in one sentence?
HEIC is Apple's space-saving image format for modern iPhone and iPad photos.
Is HEIC bad?
No. HEIC format is efficient; it is only inconvenient when another app does not support it.
Should I turn HEIC off?
Turn it off only if you constantly need JPG originals; otherwise convert copies when needed.
Long-tail queries this page now covers
A generic page can rank for a broad term once it has authority, but a focused page needs to answer the exact job behind the query. This section helps the page answer what is HEIC searches while keeping HEIC format language tied to real user tasks.
best HEIC format for what is HEIC workflows: the page gives a practical answer, explains the trade-off, and links back to the working converter when a user is ready to act.
HEIC format without confusing format settings: the page gives a practical answer, explains the trade-off, and links back to the working converter when a user is ready to act.
HEIC format for private JPG copies: the page gives a practical answer, explains the trade-off, and links back to the working converter when a user is ready to act.
HEIC format for batch photo handling: the page gives a practical answer, explains the trade-off, and links back to the working converter when a user is ready to act.
what is HEIC when the first app fails: the page gives a practical answer, explains the trade-off, and links back to the working converter when a user is ready to act.
what is HEIC for upload and sharing problems: the page gives a practical answer, explains the trade-off, and links back to the working converter when a user is ready to act.
what is HEIC with original HEIC files preserved: the page gives a practical answer, explains the trade-off, and links back to the working converter when a user is ready to act.
what is HEIC using a browser-based workflow: the page gives a practical answer, explains the trade-off, and links back to the working converter when a user is ready to act.
Need the working tool instead of another guide? Open the browser HEIC to JPG converter.