How to Convert HEIC to JPG (Free, Fast, No App Needed)

HEIC is the default photo format on iPhones since iOS 11. The problem: Windows, Android, and most websites don't support it natively. If you've ever downloaded photos from your iPhone and found they won't open anywhere, this is why.

The fastest fix is Mizakii's HEIC to JPG converter — upload your file, get a JPG back in seconds, no software to install.

What Is HEIC?

HEIC stands for High Efficiency Image Container. It uses the HEVC (H.265) compression codec and was adopted by Apple in 2017 to store photos at roughly half the file size of JPEG without visible quality loss.

A 4MB JPEG from a DSLR might be 2MB as HEIC with the same perceptible quality. On a phone with 256GB of storage and thousands of photos, that adds up to meaningful space savings.

The format is technically superior to JPEG. The compatibility problem is entirely practical — the industry hasn't broadly adopted it yet.

Why HEIC Breaks on Windows and Android

HEIC uses the HEVC codec, which is patent-licensed. Microsoft and Google haven't built it into their operating systems by default:

Windows 10/11 — can't open HEIC without installing the "HEIF Image Extensions" codec from the Microsoft Store (free but requires a manual step)
Android — most Android phones can't open HEIC files from other devices natively
Web upload forms — most websites that accept photo uploads reject HEIC
Adobe products (older versions) — Photoshop CS6 and earlier can't open HEIC
Email attachments — some email clients display HEIC as a blank attachment

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 installation, no account. Works on Windows, Mac, and Android browsers.

Option 2: iPhone Settings (Prevent the Problem)

Stop your iPhone from saving in HEIC at all:

Settings → Camera → Formats → Most Compatible

This switches to JPG capture. You lose the ~50% size savings, but every photo you take from that point is a universally compatible JPG.

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.

| Output quality | File size (typical) | Visible quality loss | |---------------|--------------------|--------------------| | 95% (high) | ~2–4 MB | Not visible | | 85% (medium) | ~1–2 MB | Not visible | | 75% (standard) | ~0.5–1 MB | Minor at 100% zoom | | 60% (compressed) | ~300–500 KB | Visible on close inspection |

For sharing and uploading, 85% quality is the standard. For archiving or print, use 95%.

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 up to 10–20 files, an online converter is the fastest option. Mizakii's HEIC to JPG tool handles individual files quickly without any 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

Open Mizakii HEIC to JPG →

Upload your HEIC file and download the JPG. Free, no signup, runs in your browser.