HEICをJPGに変換する方法（無料、アップロード不要）

HEIC (High Efficiency Image Container) is Apple’s default photo format since iOS 11. While it saves storage space, many apps and websites still require JPEG. Here’s how to convert HEIC to JPG — without uploading your photos to a server.

Why convert HEIC to JPG?

HEIC files are half the size of JPEGs at the same quality, but compatibility is limited:

• Windows — doesn’t open HEIC natively (requires paid codec)
• Social media — many platforms don’t support HEIC uploads
• Printing services — require JPEG or PNG
• Legacy software — can’t open HEIC files

Method 1: heicgo.com (Recommended)

The fastest way: open heicgo.com, drag in your HEIC files, and download JPEGs. Key benefits:

1. No upload — everything happens locally in your browser
2. EXIF preserved — GPS location, date, and camera info stay intact
3. Batch conversion — convert multiple files at once
4. Quality control — choose your output quality
5. Free — no registration, no limits

Method 2: Preview on Mac

1. Open the HEIC file in Preview
2. Click File > Export
3. Choose JPEG as the format
4. Adjust quality and click Save

This method is fine for 1-2 files but doesn’t preserve EXIF and has no batch support.

Method 3: Photos App on Mac

1. Open Photos app
2. Select photos and drag to Finder
3. Photos automatically converts to JPEG on export

Again, EXIF data may be stripped.

Why EXIF matters

EXIF data contains:

• Date and time the photo was taken
• GPS coordinates
• Camera model and settings
• Orientation information

When you convert with heicgo.com, all of this is preserved. Other free converters strip EXIF data, which means you lose the ability to sort photos by date or see where they were taken.

FAQ

Is there file size limit? Files up to 50MB each.

Does it work on mobile? Yes, heicgo works on Safari and Chrome on iPhone and Android.

Is it really free? Yes. The site is supported by ads.

Further Reading

• What Is a HEIC File? — understand the format before converting
• Preserve EXIF Data When Converting HEIC — keep GPS and camera metadata
• Batch Convert HEIC to JPG — convert multiple files at once