Every photo you take on an iPhone or iPad after iOS 11 is saved in HEIC format (High Efficiency Image Container). It's excellent technology — HEIC files are roughly half the size of an equivalent JPEG at the same quality. But the moment you try to share, email, or upload a HEIC photo somewhere that doesn't support it, you hit a wall.
HEIC is Apple's implementation of the HEIF (High Efficiency Image Format) standard, adopted in iOS 11 and macOS High Sierra. It uses the HEVC (H.265) video codec to compress still images, achieving roughly 2× the compression efficiency of JPEG at equivalent visual quality.
The problem: HEIC is not universally supported. Windows needs a paid codec extension. Most online tools, email clients, and older Android devices can't open HEIC without conversion. Social platforms like Twitter/X and some email providers silently fail or strip the file.
| Feature | HEIC | JPEG |
|---|---|---|
| File size (same quality) | ~50% smaller | Baseline |
| Browser support | Safari, Chrome 105+ | All browsers |
| Windows compatibility | Requires codec | Native |
| Social media upload | Limited | Universal |
| Transparency support | Yes | No |
| Edit in most apps | Limited | Universal |
ImgMin supports HEIC natively — you can compress and optionally convert to JPEG or WebP in one step. Here's how:
.heic files onto the drop zoneIf you're sending a batch of photos from a trip or event, compressing one at a time is impractical. ImgMin supports up to 10 HEIC files simultaneously:
For larger batches (50+ photos), consider using Mac Preview (Export → JPEG) or the sips command-line tool: sips -s format jpeg *.HEIC --out ./converted/
| Original HEIC | Output Format | Quality | Compressed Size |
|---|---|---|---|
| 4 MB (12MP photo) | JPEG | 80% (Balanced) | ~600–900 KB |
| 4 MB (12MP photo) | JPEG | 90% (High Quality) | ~1.2–1.8 MB |
| 4 MB (12MP photo) | WebP | 80% (Balanced) | ~400–700 KB |
| 800 KB (portrait) | JPEG | 80% (Balanced) | ~150–250 KB |
If you consistently need JPEG compatibility, you can change your iPhone's camera format: Settings → Camera → Formats → Most Compatible. This shoots in JPEG instead of HEIC. The trade-off: your camera roll will use roughly twice as much storage per photo. For most users, compressing at the point of sharing is a better approach than changing the capture format.
No app, no account, no upload. Drag your iPhone photos and get compressed JPEGs in seconds.
Try ImgMin Free →Windows 10 and 11 support HEIC natively if you install the HEIF Image Extensions from the Microsoft Store (free). Alternatively, converting HEIC to JPEG using a browser tool like ImgMin requires no installation and works on any operating system.
Yes, any lossy compression slightly reduces quality. However, compressing at 80–90% quality produces results that are visually identical to the original for most uses. The key is to compress once from the original — avoid re-compressing an already-compressed image.
Go to Settings → Camera → Formats and choose "Most Compatible". This makes your iPhone shoot in JPEG instead of HEIC. Note this produces larger files per photo. If sharing compatibility is your main concern, compressing and converting at the point of sharing is usually a better approach than changing the capture format.