Compress HEIC to 1MB
Automatically compress any HEIC photo to 1MB or less — perfect for cloud backup and general sharing.
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How to compress HEIC
- Upload your HEIC (up to 50 MB).
- The compressor automatically targets 1 MB or under.
- Download the compressed HEIC — virtually identical to the original.
Quick fact about HEIC
1 MB is generous for HEIC — high-resolution photos and HDR images both fit. iPhone photos compressed to 1 MB HEIC typically retain 95%+ of their original quality while being 2-4x smaller.
Why compress HEIC?
1 MB is the target for high-resolution iPhone photos where quality matters most — HDR data, fine detail, and print preview. Modern iPhones produce 2-4 MB HEIC photos; compressing to 1 MB reduces size 50-75% while preserving 95%+ of original quality. This is useful for archival, high-quality email, and any platform that accepts up to 1 MB.
Technical details
| Input format | HEIC, HEIF |
| Output format | HEIC |
| Target size | 1 MB or under |
| Codec | HEVC (H.265) |
| Iteration | Quality auto-tuned until target met |
| Typical quality | 92-96% at 1 MB |
| Transparency | Preserved (rare in HEIC) |
| HDR | Often preserved at 1 MB |
| Max file size | 50 MB per file |
| File retention | Auto-deleted after compression |
How the conversion works
The compressor decodes the HEVC-compressed HEIC image and re-encodes it using libheif at a lower quality setting. If the output exceeds 1 MB, it reduces quality (and if necessary, dimensions) until the target is met. At 1 MB, a HEIC is typically 3000-4000px wide with quality 92-96% — visually identical to the original.
When to compress HEIC
- Archiving high-resolution iPhone photos.
- Preparing HEIC for print preview (medium format).
- High-quality email attachments (under 25 MB).
- Preserving HDR photos with minimal size reduction.
- Reducing iCloud storage without losing visible quality.
- High-quality portfolio delivery.
- Any platform with a 1 MB HEIC limit.
Quality considerations
1 MB is very high-quality for HEIC — the photo is visually identical to the original. Expect 3000-4000px wide with quality 92-96%. HDR metadata is often preserved at 1 MB.
Limitations and caveats
- 1 MB is large — not ideal for web performance or email.
- For web use, 100-200 KB is usually sufficient.
- For high-quality email, 200-500 KB is more appropriate.
- HDR preservation is not guaranteed at all quality settings.
- For maximum quality, keep the original HEIC.
Compatibility
- Compressed HEIC opens natively on iOS 11+, iPadOS, macOS High Sierra+.
- Windows 10/11 supports HEIC with the free HEIF Image Extensions.
- Syncs with iCloud Photos.
- Accepted by most CMS platforms (with HEIC support).
- Standard HEIC — no special software needed on Apple devices.
Tips for best results
- 1 MB is best for archival and high-quality preservation.
- HDR metadata is often preserved at 1 MB.
- For web use, 100-200 KB is usually sufficient.
- HEIC opens natively on Apple devices.
- Batch-compress up to 50 MB of HEIC files at once.
Compression levels explained
| Level | Size reduction | Best for |
|---|---|---|
| Auto-target 1 MB | Variable (until 1 MB) | High-res, HDR, archival |
Target a specific file size
Need to hit an exact size? Use our dedicated target-size tools:
Common problems and fixes
- HEIC is still over 1 MB after compression
- Very large originals may need resizing. Try cropping, or use the general HEIC compressor.
- File is larger than needed for web
- For web use, 100-200 KB is usually sufficient. Use those variants instead.
- HDR metadata is lost
- At 1 MB, HDR is often preserved. If it's lost, use 'Low' quality in the general HEIC compressor, or keep the original.
Frequently asked questions
Explore related tools
Sources and references
Last reviewed: 2026-10-01