Apple introduced HEIF photo capture with iOS 11. Compatibility is now common on current Apple devices and available in parts of Windows and Android, but support still varies by operating-system version, installed codecs, browser, and upload service. Convert a copy when the receiving app specifically requires JPEG.
The fastest fix is Mizakii's HEIC to JPG converter — choose a supported file and convert it without installing desktop software.
What Is HEIC?
HEIC is the filename extension commonly used for images stored in the High Efficiency Image File Format (HEIF). Apple documents HEIF as offering better compression than JPEG while preserving comparable visual quality.
File-size savings vary with the image and encoder. HEIF can also retain features that a JPEG export may not preserve, so keep the original HEIC when archival quality or later editing matters. See Apple's current HEIF and HEVC guidance.
Why HEIC Compatibility Still Varies
Support depends on the complete decoding path, not merely the filename:
- Windows may require Microsoft's HEIF/HEVC extensions or another compatible application.
- Android support varies by OS version, manufacturer software, and the application opening the file.
- Web upload forms accept only the formats configured by the site owner; check the form's stated requirements.
- Older editors and mail clients may treat HEIC as unsupported even when another application on the same device can decode it.
How to Convert HEIC to JPG
Option 1: Online (Fastest)
- Go to Mizakii HEIC to JPG
- Upload your HEIC file
- Download the converted JPG
No account or desktop installation is required. Browser decoding support varies, so keep the original file if conversion fails.
Option 2: iPhone Settings (Prevent the Problem)
Stop your iPhone from saving in HEIC at all:
Settings → Camera → Formats → Most Compatible
This switches new photos to JPEG, which is more broadly compatible. Existing HEIC photos are not changed.
Option 3: iPhone "Transfer to Mac or PC" Setting
Your iPhone can automatically convert to JPG when transferring via USB:
Settings → Photos → Transfer to Mac or PC → Automatic
The photos stay as HEIC on the phone but are converted to JPG as they transfer. Best of both worlds if you only need JPG on your computer.
Option 4: Windows HEIF Extensions
If you want Windows to open HEIC natively:
- Open Microsoft Store
- Search "HEIF Image Extensions"
- Install the free extension
- Windows Photos and File Explorer will now open HEIC files
This doesn't convert them to JPG — it just lets Windows read them directly.
Option 5: macOS Preview
If you're on a Mac:
- Open the HEIC file in Preview
- File → Export
- Choose JPEG as the format
- Click Save
Mac handles HEIC natively since macOS High Sierra.
Quality Comparison
Converting HEIC to JPG involves re-encoding, which introduces some quality loss depending on the output quality setting.
JPEG output size and visible loss depend on the source image, dimensions, encoder, and quality setting. There is no universal file-size table or quality setting that fits every photo. Compare the exported JPEG with the original before deleting the HEIC, especially for print or archival use.
When to Keep HEIC vs Convert
Keep HEIC when:
- Storing photos on your iPhone or Mac (saves space, full quality)
- Sharing with other Apple users
- Archiving — HEIC technically preserves more data than JPEG
Convert to JPG when:
- Uploading to websites, social media, or any web service
- Sharing with Windows or Android users
- Sending to clients or non-tech recipients
- Using with older software that doesn't support HEIC
HEIC vs HEIF — What's the Difference?
You'll sometimes see both terms. HEIF (High Efficiency Image Format) is the container format specification. HEIC is Apple's specific file extension and implementation of HEIF using HEVC compression. They're effectively the same thing — HEIC files are HEIF files. The .heic extension is what iPhones produce; .heif is used by some other devices.
There's also HEICS — a HEIF sequence file that stores a burst of images or Live Photos in a single file. Same compatibility issues as HEIC.
Batch Converting Multiple HEIC Files
If you have a folder of HEIC photos to convert, doing them one at a time is slow. Options:
macOS — Automator
- Open Automator → New Quick Action
- Add "Change Type of Images" action
- Set output to JPEG
- Save and run on a folder
macOS — command line with sips
for f in *.heic; do
sips -s format jpeg "$f" --out "${f%.heic}.jpg"
done
Converts every .heic file in the current folder to JPG using the built-in sips tool. No installation required on macOS.
Windows — PowerShell with CopyItem
Windows doesn't have a native batch HEIC converter. Install the HEIF Image Extensions from the Microsoft Store first, then use IrfanView or XnConvert (both free) for batch conversion.
Online tool for small batches
For a small number of files, a browser converter can be a convenient option. Mizakii's HEIC to JPG tool handles individual supported files without desktop setup.
Other Apple Image Formats You Might Encounter
| Format | Extension | What it is |
|--------|-----------|------------|
| HEIC | .heic | Standard iPhone photo (HEVC compressed) |
| HEICS | .heics | Burst/Live Photo sequence |
| HEIF | .heif | Generic HEIF container (non-Apple devices) |
| ProRAW | .dng | iPhone 12 Pro+ raw format, opens in most raw editors |
| Live Photo | .mov + .heic | Still + short video pair |
ProRAW (.dng) has much better compatibility than HEIC — it opens in Lightroom, Photoshop, and most raw editors without conversion.
Convert HEIC to JPG Now
Choose a browser-decodable HEIC file and download a JPEG copy. The tool is free and requires no account; retain the original because conversion is lossy.