HEICをJPGに一括変換：完全ガイド

Converting one HEIC file is easy — but what about 50, 200, or 1000 photos? Here’s how to batch convert HEIC to JPG efficiently.

Method 1: heicgo.com (Free, No Upload)

1. Go to heicgo.com
2. Drag and drop ALL your HEIC files at once
3. Adjust quality settings
4. Click “Convert to JPG”
5. Click “Download All (ZIP)” to get a single ZIP archive

Benefits: No file upload, preserves EXIF, free with no limits.

Batch Conversion with Preview on Mac

1. Select all HEIC files in Finder
2. Open with Preview
3. Select all in sidebar (Cmd+A)
4. File → Export Selected Images
5. Choose JPEG format and destination

Limitation: No EXIF preservation, slower for large batches.

Using Shortcuts on iPhone

1. Open Shortcuts app
2. Create a new shortcut:
   • “Select Photos” (allow multiple)
   • “Convert Image” (to JPEG)
   • “Save to Photos”
3. Run the shortcut — select all HEIC photos

This method works but may reduce quality and strips EXIF.

Batch Size Recommendations

Number of Files	Recommended Tool	Estimated Time
1-10	Any method	< 1 minute
10-100	heicgo.com	1-5 minutes
100-500	heicgo.com	5-15 minutes
500+	Desktop software	15-60 minutes

For very large batches (1000+), split into groups of 100-200 to avoid browser memory limits.

Preserving EXIF in Batch Mode

Most batch converters strip EXIF. heicgo preserves GPS, timestamps, and camera info for every file in the batch — no other free tool does this.

Further Reading

• How to Convert HEIC to JPG — single file conversion guide
• Reduce Photo File Size for Email — optimize batches for sharing
• iPhone Photo Storage Guide — free up space after batch conversion