HEIC vs JPEG File Size: Real Comparison

The Bottom Line

On average, HEIC files are about 50% smaller than JPEG files at the same visual quality. An iPhone HEIC photo at the default "High Efficiency" setting typically ranges from 1.5-3.5 MB, while the same photo saved as JPEG at high quality ranges from 3-7 MB. For a 64GB iPhone user taking 100 photos per week, switching to HEIC saves roughly 10-15 GB per year.

Real File Size Test Results

We tested with an iPhone 15 Pro camera (48MP main sensor, default settings) across different scenes:

• Landscape photo: HEIC 2.8 MB | JPEG (92% quality) 4.5 MB — HEIC is 38% smaller
• Portrait photo: HEIC 2.1 MB | JPEG (92% quality) 3.8 MB — HEIC is 45% smaller
• Indoor photo: HEIC 3.4 MB | JPEG (92% quality) 6.2 MB — HEIC is 45% smaller
• Document/text scan: HEIC 1.2 MB | JPEG (92% quality) 2.1 MB — HEIC is 43% smaller
• Night mode photo: HEIC 5.1 MB | JPEG (92% quality) 8.0 MB — HEIC is 36% smaller

Why Is HEIC So Much Smaller?

HEIC uses HEVC/H.265 compression, a modern video codec designed for efficient compression. It can exploit spatial redundancies (similar colors in adjacent areas) more effectively than JPEG's block-based DCT approach. HEVC is roughly 30-50% more efficient than the JPEG compression algorithm for the same perceptual quality. Additionally, HEIC supports variable block sizes (up to 64×64 pixels vs JPEG's fixed 8×8 blocks), allowing smoother regions to be compressed more efficiently.

The Quality Trade-Off

Visually, HEIC and JPEG at comparable file sizes look nearly identical to the human eye. HEIC's advantage is clearer at the extremes: HEIC at very high quality (minimal compression) is significantly smaller than JPEG at minimal compression. At very low quality (heavy compression), HEIC degrades more gracefully with smoother artifacts, while JPEG shows blocky, ring artifacts that are more distracting.

Should You Switch to HEIC?

HEIC is ideal for storage and sharing within the Apple ecosystem — you save significant space with negligible quality loss. However, for sharing with non-Apple users, uploading to websites, or archiving in a universally compatible format, converting to JPEG is still necessary. Use our converter to batch convert HEIC files to JPEG whenever you need guaranteed compatibility.