If you've ever AirDropped or emailed a photo from an iPhone to a Windows PC and gotten a file that won't open, or tried to upload it to a website and hit an error, you've run into HEIC. It's Apple's default photo format since iOS 11, and while it works great on Apple devices, a lot of the rest of the internet still doesn't fully support it.
Why HEIC Causes Problems
HEIC (High Efficiency Image Format) stores photos at roughly half the file size of an equivalent JPG with comparable quality, which is why Apple made it the default. The tradeoff is compatibility. Older versions of Windows can't preview HEIC files without an extra codec, many websites and upload forms reject them outright, and some apps simply don't recognize the format at all.
The Fix: Convert to JPG
JPG is the one format that's guaranteed to open anywhere — every browser, every operating system, every upload form on the internet. Converting a HEIC photo to JPG solves the compatibility problem instantly, and for a single photo you're viewing or sharing, the difference in file size rarely matters.
- Drop your HEIC file (or a batch of them) into the Convert Image tool.
- Select JPG as the output format.
- Download the converted file — done in seconds, nothing leaves your device.
Is It Safe to Convert in a Browser?
Yes. The conversion happens entirely on your own device using your browser's built-in image processing — your photos are never uploaded to a server. That matters more than it might seem: plenty of "free HEIC converter" sites quietly upload your images to process them remotely, which is worth avoiding for personal photos.
A Quick Note on Quality
Converting HEIC to JPG is technically a lossy step, since JPG uses different compression than HEIC. In practice, at high quality settings the difference is invisible to the eye for normal viewing and sharing. If you're archiving photos for long-term storage where every bit matters, keep the original HEIC as a backup and convert a copy.