A HEIC file is a photo saved in Apple’s default image format. If you’ve taken a picture with an iPhone or iPad since 2017, it was almost certainly stored as .heic — which is fine until you email it, upload it to a website, or copy it to a Windows PC and discover it won’t open.
This guide explains what HEIC is, why Apple uses it, where it causes trouble, and what to do about it. If you just need a JPG right now, our free HEIC to JPG converter does it in your browser without uploading anything.
What is a HEIC file, in plain terms?
HEIC is a modern image file format. Like a JPG, it holds a compressed photo plus information about it (date taken, camera, location). The difference is the compression: HEIC uses technology borrowed from 4K video, so a photo takes up roughly half the storage of a JPG with the same visible quality.
The .heic extension tells you two things at once:
- The container is HEIF (High Efficiency Image File Format), an open standard from the MPEG group — the same people behind MP3 and MP4.
- The image inside is compressed with HEVC (also called H.265), a video codec.
That’s why HEIC is often described as “HEIF with HEVC inside.” The two names get used interchangeably, but there are real differences — see HEIF vs HEIC: what’s the difference? for the full story.
What does HEIC stand for?
HEIC is usually expanded as High Efficiency Image Container. You’ll also see “High Efficiency Image Coding.” Either way, the important part is “high efficiency”: smaller files for the same quality.
Why does my iPhone save photos as HEIC?
Apple switched the iPhone camera to HEIC with iOS 11 in 2017, on the iPhone 7 and later. The reasons were practical:
- Storage. A 12-megapixel HEIC is typically 1–3 MB; the same shot as JPG is often 3–6 MB. Over thousands of photos, that’s many gigabytes saved on your phone and in iCloud.
- Better image features. HEIF can store things JPG can’t: depth maps for Portrait mode, high dynamic range information, transparency, and image sequences such as bursts.
- Quality. At equal file sizes, HEIC preserves more fine detail and suffers less from JPG’s blocky artifacts.
So HEIC isn’t a mistake or a bug — it’s the setting called High Efficiency in your camera. We cover the “why” in more depth in Why are my iPhone photos saving as HEIC?
Why won’t HEIC files open on my computer?
The catch is licensing. HEVC is covered by patents, and software makers have to pay to include a decoder. Apple pays for it, so every Mac, iPhone and iPad opens HEIC natively. Many others don’t:
| Where you open it | Does HEIC work? |
|---|---|
| iPhone, iPad, Mac | Yes, built in |
| Windows 10 and 11 | Only with Microsoft’s HEIF and HEVC extensions — see HEIF Image Extensions for Windows |
| Android | Most phones from Android 9 onward can view HEIC; older ones can’t |
| Web browsers | Safari only; Chrome, Edge and Firefox won’t display it on a web page |
| Websites and forms | Often rejected: job portals, government sites, print shops, marketplaces |
| Older software | Usually not supported |
That’s why a photo can look perfect on your phone and show up as a blank icon on a PC. If you’re stuck on Windows specifically, How to open HEIC files on Windows 11 and 10 walks through every fix.
How to open a HEIC file
You have three options, depending on how often it happens:
- Use a device that supports it. Any Apple device, most modern Android phones, and Google Photos or Google Drive in a browser can display HEIC.
- Add support to Windows by installing the HEIF Image Extensions and the HEVC codec from the Microsoft Store.
- Convert it to a universal format like JPG — the fastest fix when you need to send, upload or print the photo.
Our guide on how to open HEIC files on any device covers Windows, Mac, Android, Chromebook, and apps like Photoshop.
How to convert HEIC to JPG (or PNG, or PDF)
Converting creates a new file in a widely supported format. Which one to pick depends on what you’re doing:
- JPG — for sharing, uploading, emailing and printing. Opens everywhere. Use the HEIC to JPG converter.
- PNG — lossless, for editing or design work. Files are much bigger. Use HEIC to PNG.
- PDF — for forms, applications and documents, including several photos in one file. Use HEIC to PDF.
- WebP or AVIF — for websites, where small files matter. See HEIC to WebP and HEIC to AVIF.
Every major platform also has a built-in way to convert. Step-by-step instructions for each are in How to convert HEIC to JPG on any device, including Mac, Windows and iPhone.
Tip: Converting photos on a website usually means uploading them to someone’s server. ConvertHEICto runs the conversion inside your browser instead, so your photos never leave your device — worth knowing if they include documents, kids or anything private.
Is HEIC better than JPG?
Technically, yes: smaller files, better quality per byte, and more features. Practically, JPG still wins on compatibility — it opens on every device and website made in the last 30 years. Many people keep HEIC on their phone to save space and convert only the photos they share. We compare them in detail in HEIC vs JPEG: which format should you use?
Can I stop my iPhone from using HEIC?
Yes. Go to Settings → Camera → Formats and choose Most Compatible. New photos will be saved as JPG (and videos as H.264). The trade-off is that each photo takes roughly twice the space, and a few camera features require High Efficiency. Full instructions, including an option that keeps HEIC on the phone but sends JPG to your computer, are in How to turn off HEIC on iPhone.
HEIC file extension variants
You may come across a few related extensions:
- .heic — the standard iPhone photo.
- .heif — a HEIF file that may use HEVC or another codec.
- .hif — used by some Canon, Sony and Fujifilm cameras for 10-bit HEIF photos.
- .heics / .heifs — image sequences, such as bursts.
- .avif — a sibling format: HEIF with AV1 compression instead of HEVC.
ConvertHEICto reads .heic, .heif and .hif files, so whichever you have, you can turn it into a JPG, PNG or PDF in a few seconds.
Going further
- Comparing tools? See Best free HEIC to JPG converters compared.
- Hundreds of photos to convert? Read How to batch convert HEIC to JPG.
- Shooting for maximum quality? Read HEIF vs RAW on iPhone.
- Just want to look at the photos on a PC? Try one of the best free HEIC viewers for Windows.
The short version
- HEIC is the iPhone’s space-saving photo format, based on HEVC video compression.
- It’s great on Apple devices but unsupported in many other places because of codec licensing.
- To open it elsewhere, install the right extensions or use a converter.
- To share it safely and universally, convert HEIC to JPG.