How to Convert HEIC to JPG for Free (No Uploads Needed)
Why iPhone photos won't open on some devices, and the fastest way to fix it without installing anything.
If you've ever AirDropped or emailed a photo from an iPhone to someone on Android or an older Windows PC and had it show up as a file that won't open, HEIC is almost always the reason. It's Apple's default photo format since iOS 11, and it's genuinely a good format — smaller files at the same quality as JPG — but support outside Apple's ecosystem is still patchy.
Why HEIC causes problems
HEIC (High Efficiency Image Container) uses a newer compression method than JPG, which is why the files are smaller. The catch is that a lot of software — older browsers, many Android photo viewers, older Windows versions without the right codec, plenty of web upload forms — simply doesn't know how to decode it. JPG, by contrast, has been the universal baseline for image compatibility for three decades. Nearly everything can open a JPG.
Converting without losing quality or privacy
The straightforward fix is converting HEIC to JPG before you send or upload the file. You don't need a desktop app or an account for this — a browser-based converter can do it in a few seconds. The one thing worth checking is where your file actually goes when you use one: many "free HEIC converter" sites upload your photo to a server to do the conversion, which means a copy of your image sits somewhere you don't control, even briefly — see why that distinction matters.
Digy's HEIC to JPG tool does the conversion inside your browser using your device's own processing — the file never leaves your device. That matters more than it sounds for anything personal: family photos, ID scans, screenshots with private information.
A quick fix on iPhone itself
If you only need this occasionally, you can also change how your iPhone camera saves photos: Settings → Camera → Formats → choose "Most Compatible" instead of "High Efficiency." This saves new photos as JPG going forward, though it won't fix photos you've already taken — for those, you'll still want a converter.