You AirDrop or copy photos from an iPhone to a PC and Windows greets you with a broken thumbnail and an offer to buy a codec. The culprit is HEIC β and there are several clean fixes, from one-off conversion to changing your iPhone's camera settings for good.
Why Your Photos Are HEIC in the First Place
Since iOS 11, iPhones default to HEIC (High Efficiency Image Container), which stores photos at roughly half the file size of JPG at the same quality. On a 128 GB phone that's a huge win β the format itself is genuinely better. The problem is purely compatibility: Windows needs a paid HEVC extension, older Android devices and many websites, printers, and government upload forms simply refuse it.
Method 1: Convert in Your Browser (Fastest, Most Private)
- Open the free Onnax HEIC to JPG Converter in any browser.
- Drop in one photo or a whole batch. Decoding happens locally β personal photos never leave your device, which matters when they're family pictures or documents.
- Choose quality (90% is visually identical) and download; batches arrive as a ZIP.
Method 2: Stop the iPhone Shooting HEIC
Prefer never dealing with this again? On your iPhone: Settings β Camera β Formats β Most Compatible. New photos will be JPG. The trade-off is roughly double the storage per photo, and slightly reduced quality ceiling (HEIC supports 10-bit color).
Method 3: Let the iPhone Convert on Transfer
Settings β Photos β Transfer to Mac or PC β Automatic makes iOS convert to JPG when transferring over USB. This keeps efficient HEIC on the phone and compatible JPG everywhere else β the best of both worlds, though it only applies to cable transfers, not AirDrop or cloud sync.
Which Method Should You Use?
| Situation | Best fix |
|---|---|
| A few photos, right now | Browser converter (Method 1) |
| Hundreds of existing photos | Browser converter in batches, saved as ZIP |
| You share photos constantly with Windows/Android users | Change camera format (Method 2) |
| You mostly transfer by cable | Automatic transfer conversion (Method 3) |
A Note on Quality
HEICβJPG is a lossy-to-lossy conversion, but at 90% JPG quality the difference is invisible in normal viewing and printing. If you're archiving irreplaceable photos, keep the HEIC originals too β they're smaller anyway.
Bottom line: HEIC is a good format trapped in a compatibility gap. Convert when you need to β privately, in your browser β and adjust your iPhone settings if the gap keeps biting you.