HEIC to JPG: open your iPhone photos anywhere
You take a great photo on your iPhone, send it to a friend or upload it to a website, and suddenly nothing works. The file ends with a strange .heic extension, and the other side just sees an error. That format is HEIC, and while it is clever and efficient, it is also the reason so many Apple photos refuse to open on Windows PCs, older apps, and a surprising number of websites. Converting those files to plain old JPG fixes the problem in seconds, and you can do it right here without uploading a single picture.
What HEIC actually is
HEIC stands for High Efficiency Image Container, a flavour of the broader HEIF (High Efficiency Image File Format) standard. Apple made it the default for the Camera app starting with iOS 11 and macOS High Sierra back in 2017, so almost every iPhone made in the last several years saves photos this way unless you tell it otherwise. Under the hood HEIC borrows the HEVC (H.265) video codec to compress still images, which is far more advanced than the decades-old method JPEG uses.
The payoff is real. A HEIC file can be roughly half the size of a JPEG at the same visual quality. On a phone packed with thousands of photos, that adds up to gigabytes of saved storage. HEIC also supports nice extras that JPEG never could: 16-bit colour for smoother gradients, transparency, image sequences for Live Photos, and depth data for portrait-mode blur. Technically, it is a better container than JPEG in almost every way.
Why so many devices and apps cannot open it
The trouble is that "better" does not mean "supported everywhere." JPEG has been universal since the 1990s, so every browser, printer, photo frame, and ancient piece of software can read it. HEIC is newer and patent-encumbered, so support is patchy. Windows does not recognise HEIC out of the box; you have to hunt down Microsoft's HEIF Image Extensions from the Store before the Photos app will even show a thumbnail. Plenty of websites, content management systems, e-commerce uploaders, and older versions of popular apps simply reject the file. Even when an upload form accepts images, it may quietly choke on HEIC because its image library was never updated to handle the format.
This is exactly where conversion saves the day. Turning a HEIC into a JPG strips away the compatibility headache entirely. The trade-off is modest: a JPG of the same picture will be somewhat larger on disk, and you lose the fancy extras like depth maps and transparency. For a normal photo you want to share, print, or upload, none of that matters and the visual quality difference is invisible to the eye.
Why doing it in your browser matters
Most "HEIC to JPG" websites ask you to upload your photos to their servers first. Think about what that means: your personal pictures, sometimes hundreds at a time, travel across the internet to a company you know nothing about, and you have no real way to confirm they are deleted afterwards. Holiday snaps, screenshots, documents, photos of your kids — all handed to a stranger's hard drive.
This tool works differently. The conversion runs entirely inside your own browser using your device's processor. Your photos never leave your computer or phone, nothing is uploaded, and there is no server copy to worry about. It is faster too, because there is no waiting for a slow upload and download round-trip. When you are done converting, you can shrink the results further with our image compressor, switch between other formats with the image converter, or browse all of our other image tools.
How to stop your iPhone shooting HEIC in the first place
If HEIC files keep tripping you up, you can tell your iPhone to capture photos as JPEG from now on. Open Settings > Camera > Formats and choose Most Compatible instead of High Efficiency. New photos will be saved as JPEG, ready to share anywhere without conversion. A couple of caveats: the change only affects photos taken after you flip the setting, so your existing HEIC library stays as it is, and "Most Compatible" also records video in H.264, which is bigger but plays everywhere. You can switch back to High Efficiency any time to reclaim storage space. Many people leave the phone on High Efficiency for the storage savings and simply convert the handful of photos they actually need to share.
Frequently asked questions
Will converting HEIC to JPG reduce my photo quality?
The visible quality stays essentially the same. JPG uses a slightly less efficient compression method, so the resulting file is usually a bit larger than the HEIC, but the picture itself looks identical to the human eye.
Are my photos uploaded to a server?
No. The conversion happens entirely in your browser on your own device. Your photos are never uploaded, so nothing leaves your computer or phone.
Why will not Windows open my HEIC files?
Windows does not include HEIC support by default. You can install Microsoft HEIF Image Extensions from the Store, or simply convert the files to JPG, which Windows opens natively with no extra software.
Can I convert many HEIC files at once?
Yes. You can drop a whole batch of HEIC photos in and convert them together, then download the JPG results. Because everything runs locally, large batches do not depend on your upload speed.
How do I stop my iPhone from saving HEIC photos?
Go to Settings, then Camera, then Formats, and choose Most Compatible. From then on your iPhone saves new photos as JPEG. Existing HEIC photos are not changed.
Do I lose Live Photo or depth data when converting?
Yes. JPG is a single flat image, so extras such as Live Photo motion, transparency, and portrait depth maps are not carried over. The still picture itself is preserved at full resolution.