What Is HEIC?
HEIC (High Efficiency Image Container) is Apple's default photo format on iPhones and iPads running iOS 11 and later. It uses the HEIF container with H.265/HEVC compression, storing photos at roughly half the file size of an equivalent JPEG while retaining comparable — often better — visual quality.
When you take a photo on an iPhone, the camera app saves it as HEIC by default. Apple chose this format to reduce the storage footprint on devices, a meaningful benefit when phones capture 12–48 megapixel images dozens of times a day.
HEIC vs JPEG: Key Differences
| Feature | HEIC | JPEG |
|---|---|---|
| Compression | H.265/HEVC (lossy) | DCT-based (lossy) |
| File size (typical photo) | ~50 % of JPEG | Baseline |
| Quality at same size | Better | Baseline |
| Colour depth | Up to 16-bit | 8-bit |
| Transparency | Yes | No |
| Multiple images in one file | Yes (bursts, Live Photos) | No |
| Editing metadata | Non-destructive edits stored | Requires re-save |
| Platform support | Apple-centric, growing | Universal |
| Licensing | HEVC patent pool | Patent-free |
Quality and File Size
HEIC's main advantage is compression efficiency. A 12-megapixel iPhone photo saved as HEIC is typically 1.5–2.5 MB, while the same image as JPEG would be 3–5 MB. The quality difference at those file sizes is negligible to most viewers — and in controlled tests, HEIC sometimes looks slightly better because it preserves fine detail and gradients more effectively.
HEIC also supports 16-bit colour depth, which preserves more tonal range in shadows and highlights. JPEG is limited to 8-bit, which can produce visible banding in smooth gradients.
Compatibility
Where HEIC Works Well
- Apple devices: iPhone, iPad, Mac (all natively since iOS 11 / macOS High Sierra)
- Windows 11: Native support via the HEVC Video Extensions (free or paid depending on the device manufacturer)
- Android: Some manufacturers include HEIC support; others require third-party apps
Where HEIC Causes Problems
- Web browsers: No major browser supports HEIC natively. You cannot embed a .heic file in an
<img>tag and expect it to display. - Social media: Most platforms accept HEIC uploads but convert them to JPEG internally
- Email: HEIC attachments may not preview correctly on non-Apple clients
- Older software: Photo editors released before 2018 generally lack HEIC support
Converting Between HEIC and JPEG
On iPhone / iPad
Go to Settings → Camera → Formats. Select "Most Compatible" to save photos as JPEG instead of HEIC. Note that this increases storage use.
When sharing via AirDrop, email, or Messages, iOS automatically converts HEIC to JPEG if the recipient's device may not support HEIC.
On Mac
Open the HEIC file in Preview, then use File → Export and choose JPEG. For batch conversion, select multiple files in Finder, right-click, and use Quick Actions → Convert Image.
On Windows
- Photos app: Open the HEIC file (requires HEVC extension), then save as JPEG via "Save a copy"
- IrfanView: Batch convert HEIC files using the Batch Conversion dialog
- ImageMagick:
magick input.heic output.jpg
Online
- heictojpg.com — Simple drag-and-drop conversion
- CloudConvert — Supports batch conversion with quality controls
When to Keep HEIC vs Switch to JPEG
Keep HEIC when:
- You primarily use Apple devices and want to save storage space
- You value the non-destructive editing metadata iOS stores in HEIC files
- You rarely need to share photos with non-Apple users or on the web
Switch to JPEG when:
- You regularly share photos across mixed platforms
- You upload to services or CMS platforms that do not accept HEIC
- You need guaranteed compatibility everywhere
- You work with web publishing where browsers cannot display HEIC
Frequently Asked Questions
Does converting HEIC to JPEG lose quality?
Yes, slightly. Both are lossy formats, so converting from one lossy format to another introduces a small amount of additional quality loss. For most practical purposes this is imperceptible, but if maximum quality matters, keep the HEIC original and convert only when needed.
Is HEIC the same as HEIF?
HEIF is the container format. HEIC is the specific variant that uses HEVC compression — which is what Apple uses. Other codecs (like AV1 for AVIF) can also be stored in an HEIF container.
Will browsers ever support HEIC?
Unlikely, because HEVC has patent licensing requirements that conflict with the open web's preference for royalty-free codecs. AVIF (which is royalty-free) is the likely successor for web image delivery.