What is a HEIC file?

A HEIC file is a photo. It's the format newer iPhones and iPads save pictures in by default. The name stands for High Efficiency Image Container, and the point of it is size: a HEIC photo is roughly half the size of the same picture saved as a JPG, at about the same quality. That's great on your phone. It's a problem the moment you try to open the photo somewhere that doesn't recognize the format, which is most Windows PCs.

Why does my iPhone save photos as HEIC?

Apple switched to HEIC as the default a few years back to save storage. The format uses a more modern kind of compression than JPG, so the same photo takes up less room. On a phone full of thousands of pictures, that adds up fast.

Your iPhone shows these photos normally because Apple's software reads HEIC without any fuss. You'd never know the format changed. The trouble only starts when the photo leaves the Apple world and lands somewhere that's never heard of it.

Why won't my iPhone photo open on Windows?

Because a lot of Windows software doesn't read HEIC. Windows 10 and 11 can open HEIC photos if a specific extension is installed, and on many machines it isn't. So you double-click the file and get an error, or a blank preview, or a prompt to buy something from the Microsoft Store.

It shows up in a few common ways:

• You double-click a .HEIC file and Windows says it can't open it.
• You drag the photo into an older program (an email client, a design tool, an accounting app) and it refuses the file.
• You try to upload the photo to a website or a portal and the form rejects it, because the form only accepts JPG or PNG.

If a client or coworker emailed you photos straight from their iPhone, this is usually what happened. The photos are fine. Your computer just doesn't speak the format.

The fix: convert the HEIC to a JPG

JPG is the format that opens everywhere. Windows reads it, every photo program reads it, and upload forms accept it. So the fix is to convert the HEIC file to a JPG, and then use the JPG.

You can do this with porto.tools HEIC to JPG converter. You drop the photo in, it converts on your own computer, and you download the JPG. The photo never leaves your device. That matters when the photo isn't really yours to upload, like when a client sent it and it shows a property, a person, or a document you'd rather not hand to an unknown website. If you want to check nothing is being sent, turn off your wifi after the page loads and the converter still works.

It's free, with no sign-up and no watermark. If you have a batch of photos from the same iPhone, you can run them through together.

One honest detail: the JPG you get back is usually a bit larger on disk than the original HEIC was. HEIC packs a photo into less space, so converting to the older JPG format trades some of that efficiency for compatibility. For most photos the difference is small, and the JPG opens everywhere, which is the whole reason you're converting it.

If you also need to handle PNG or WebP images, the same tool covers those under the image converter.

Will I lose quality when I convert?

A little, in theory. JPG is a lossy format, so a single conversion drops a tiny amount of detail you're very unlikely to notice on a normal photo. For sharing, printing a snapshot, or uploading to a form, the converted JPG looks the same to the eye. The thing to avoid is converting the same photo back and forth many times, since each save loses a bit more.