You AirDrop a photo from your iPhone to your laptop, double-click it, and… nothing opens. Or you upload it to a website that politely tells you “unsupported file type.” Welcome to the wonderful world of HEIC, Apple’s default photo format since iOS 11.
HEIC is genuinely a great format—smaller files, better quality, more metadata—but it’s not universally supported, and that gap is where the frustration lives. This guide covers every reliable way to convert HEIC to JPEG, from a single photo in a browser to your entire camera roll, plus the iPhone setting that prevents the problem from happening in the first place.
What HEIC Actually Is
HEIC stands for High Efficiency Image Container. It’s based on the HEVC video codec, and its main trick is fitting roughly twice as much image quality into the same number of bytes as JPEG. A 4MB JPEG becomes a 2MB HEIC with no visible loss. Multiply that across thousands of photos and you save real storage—both on your phone and in iCloud.
The catch is compatibility. Apple supports HEIC everywhere. Microsoft, Google, Adobe, and most websites support it sometimes, depending on which extension you’ve installed or which year the software was last updated. JPEG, by contrast, has worked everywhere since 1992. So when you need to share a photo with the wider world, JPEG is still the safe bet.
Method 1: Convert in a Browser (Easiest)
The fastest no-install option is a browser-based converter. You drag a HEIC file onto a web page, it converts in your browser (often without ever uploading to a server), and you download a JPEG. The whole flow takes about ten seconds.
This is what I reach for when I just need one or two photos and don’t want to mess with system settings. Works on any device, any operating system, no software to install. If privacy matters to you, look for converters that explicitly process files locally in the browser rather than uploading.
Method 2: Convert on a Mac
Macs handle HEIC natively, so “conversion” is mostly an export step.
The simplest path: open the HEIC file in Preview, choose File → Export, and pick JPEG from the format dropdown. You can adjust quality with a slider before saving. For a batch, select multiple files in Finder, right-click, and choose Quick Actions → Convert Image. macOS gives you a one-shot dialog to pick format, size, and where to save.
If you have hundreds of photos, the Photos app can also export as JPEG via File → Export → Export Photos, with format set to JPEG.
Method 3: Convert on Windows
Windows is where HEIC has historically been painful. The fix is to install Microsoft’s HEIF Image Extensions and HEVC Video Extensions from the Microsoft Store. Once those are in place, Windows Photos opens HEIC files natively, and you can use Paint or Photos to “Save as” JPEG.
For batch conversions on Windows, free tools like IrfanView or XnConvert handle hundreds of files in one click. They’ve been around forever and they still work.
Method 4: Convert on the iPhone Itself
You can convert on the iPhone before sending the photo anywhere. The trick: when you copy a HEIC photo from Photos and paste it into the Files app, iOS automatically converts it to JPEG. Same thing happens if you share via email in some workflows. It’s not the most discoverable feature, but it works.
There are also dedicated converter apps in the App Store. Most of them are fine, but for one-off conversions a browser is usually faster.
The Best Fix: Stop Shooting HEIC
If you’re constantly converting, the real solution is to change the iPhone setting that controls capture format.
Open Settings → Camera → Formats. You’ll see two options: “High Efficiency” (HEIC) and “Most Compatible” (JPEG). Switch to Most Compatible and your iPhone will save new photos as JPEG from now on. You’ll use slightly more storage, but you’ll never deal with this conversion problem again.
There’s also a related setting under Settings → Photos called “Transfer to Mac or PC.” If you set it to “Automatic,” iOS will convert HEIC to JPEG on the fly when transferring via USB, even if your photos are stored as HEIC on the device. This is the best of both worlds—small files on the phone, compatible files on the computer.
Quality Considerations
When you convert HEIC to JPEG, you’re going from a more efficient codec to a less efficient one. The JPEG will be larger and visually identical at high quality settings. There’s no quality loss in the sense of “the conversion makes the photo worse”—the original information is preserved. You’re just packaging it in a less efficient container.
Where you can lose quality is if you set the JPEG quality slider too low. 80–90% is the sweet spot for most photos. Below 70% you start to see compression artifacts, especially in skies and skin tones.
What About Metadata?
HEIC files carry a lot of metadata—GPS coordinates, camera settings, timestamps, even depth data and Live Photo information. Most converters preserve EXIF (the basic camera info) but strip the more exotic data like depth maps. If you need to verify what made it through, an EXIF viewer will show you everything embedded in the resulting JPEG.
This is also useful when you want to confirm whether a converted file kept GPS data (which you might want to strip before sharing publicly) or when you’re trying to figure out what camera and settings were used for a photo.
A Common Gotcha
One thing that catches people: if you AirDrop a photo from iPhone to Mac, macOS sometimes silently converts it to JPEG and sometimes leaves it as HEIC, depending on how the receiving app handles incoming files. If you AirDrop into Photos, it stays HEIC. If you AirDrop into a chat app or save directly to Desktop, behavior varies. When in doubt, check the file extension before assuming.
Wrapping Up
HEIC is a better format than JPEG in pretty much every technical way, but JPEG still wins on compatibility, and that’s what matters when you’re trying to share a photo with someone who doesn’t live in the Apple ecosystem.
For one-off conversions, a browser tool is the fastest path. For ongoing convenience, change your iPhone capture format or enable the automatic transfer setting. And if you’re doing serious volume, native tools on Mac or the HEIF extensions on Windows will handle batches without breaking a sweat. Pick the method that fits your workflow and you’ll never see “unsupported file type” again.