HEIC vs JPEG: 품질, 파일 크기, 호환성 비교

Should you keep your photos in HEIC or convert them to JPEG? The answer depends on your use case, but the technical differences are clear.

Compression efficiency

HEIC uses HEVC (H.265) compression, which is ~25 years newer than JPEG’s DCT-based compression. The result:

Scenario	JPEG Size	HEIC Size	Savings
Portrait photo	4.2 MB	1.8 MB	57%
Landscape with sky	5.1 MB	2.3 MB	55%
Low-light indoor	3.8 MB	1.6 MB	58%
Text/document	2.1 MB	0.9 MB	57%

Quality at equivalent file sizes

When both formats target the same file size (e.g., 1 MB), HEIC consistently produces fewer visible artifacts, especially in:

• Gradient areas (skies, skin tones)
• Fine detail (hair, foliage)
• Text overlays

Bit depth matters

HEIC supports 16-bit color depth, while JPEG is limited to 8-bit. This matters for:

• Editing — 16-bit gives more latitude for exposure/color adjustments
• HDR displays — 10+ bit color is increasingly common
• Printing — more color information means better prints

When to keep HEIC

• You’re an iPhone user staying in the Apple ecosystem
• You need to save storage space on your device
• You plan to edit photos later (16-bit depth helps)

When to convert to JPEG

• You need cross-platform sharing (Windows, Android, web)
• You’re uploading to social media or websites
• You’re sending photos to a printing service
• You need guaranteed compatibility

Converting without quality loss

Use heicgo.com to convert HEIC to JPEG at 100% quality. The output will be visually identical to the original, and your EXIF data stays intact.

Further Reading

• What Is a HEIC File? — deep dive into the format
• Does Converting HEIC to JPG Lose Quality? — quality implications explained
• JPEG vs PNG vs HEIC vs WebP — compare all four formats