HEIC photo won't open on Windows or upload to a website? Getting iPhone photos as JPG

Nothing is wrong with the photos. When the iPhone camera is set to High Efficiency, stills are saved as HEIF, with the .heic extension. Apple's support page says iPhone 7 and later can shoot this way on iOS 11 or later. The format fits the same picture into less space. Apple devices open it without a second thought; much of the rest of the world does not.

Copied from iPhone to PC and everything is .HEIC

The usual route into this problem is a USB cable. Apple's page says that when you import from an attached iPhone "into Photos, Image Capture, or a PC, the media might be converted to JPEG or H.264." Note the word might. Whether it happens depends on a setting, and apparently on the PC. This Apple Community question shows the second part:

Same phone, same cable, same setting, different result. Apple does not publish the rule. In another thread, a longtime Apple Community helper described it like this: "the conversion is only applied when downloading photos directly from the device, and only, when the system on the PC cannot handle HEIF." In other words, if the phone decides your PC can handle HEIF, you get HEIF, whether or not the app you actually use can open it.

Windows Photos says "You need an extension to use this file"

Microsoft's support article for the Photos app on Windows 10 gives this message for HEIF and HEVC files, and points to two downloads in the Microsoft Store:

The article is explicit: "You'll need both, even if you only plan on using photos and not videos." The HEIF extension's own Store listing says HEVC Video Extensions "must be installed in order to view images stored in HEIF files that use the .heic, .hif or .heif file extensions." Installing only the free one and stopping there is the usual mistake.

Installing both does not always settle it either. This Microsoft Q&A question has been marked by more than 50 people as their problem too:

The reply most people found helpful blamed one particular build of the HEVC extension and rolled back to an older one. We could not confirm that from anything Microsoft has published, so treat it as one person's fix. What is certain: the extensions only let your own PC display the file. It is still a HEIC. Email it, attach it to a form, or hand it to someone on another computer, and the problem travels with it.

Upload forms that reject .heic

Job portals, school systems, government forms and plenty of web apps list the image types they accept, and HEIC is rarely among them. Browsers are part of the reason. According to caniuse, Chrome, Edge and Firefox cannot display HEIC images at all, and Safari only can from version 17. A form that shows you a preview of your photo would have nothing to show.

Well-known web apps do it too. From the Adobe Community:

That advice holds for most forms: convert to JPG before uploading. Expect one side effect. HEIC compresses better than JPG, so the converted file is usually larger than the original. If the form also caps the file size, see the last section.

The iPhone settings, and what they leave alone

The first row catches people out. Apple's wording is that "all new photos and videos will now use JPEG or H.264 format." New ones. Changing the setting today does nothing for last summer's holiday photos. It also costs space, since Apple describes HEIF as the space-saving option. If your phone is nearly full, leave the camera alone and convert only the photos you send out.

The second row is narrower than it sounds. The same Apple Community helper added: "The Setting does not ensure that Photos will be converted, when you share them in other ways." Uploading from a cloud storage app, a file manager or a browser is a different path, and this setting has no say over it.

Converting photos you already have

On a Mac it is built in. Apple's instructions: open the HEIF image in Photos or Preview, then "choose File > Export, then choose a format such as JPEG or PNG before saving."

On Windows, or on a work or school PC where you cannot install Store extensions, the HEIC converter on this site runs in the browser and uploads nothing. Here is what it does, checked against its code:

• Takes as many photos as you drop in and converts them one after another. With more than one, the results page offers Download all (ZIP).
• Saves as JPG (the default), PNG or WebP. JPG and WebP have a quality slider from 30% to 100%, starting at 82%.
• Reads the rotation flag stored inside the HEIC, so portrait shots come out upright.
• Keeps the file name and swaps the extension: IMG_0123.HEIC becomes IMG_0123.jpg.
• Leaves out the capture data (date, location, camera model), because the picture is redrawn and saved fresh. Useful for uploads, and a reason to keep the originals.
• In browsers that cannot decode HEIC, such as Chrome and Firefox, it fetches a photo engine of about 1.4 MB the first time. Safari decodes HEIC itself and skips that step.

Convert HEIC to JPG in your browser

What it will not do: a Live Photo comes out as a single still, with no motion. It runs in a phone browser too, but it warns once a batch passes 40 MB, because phones can run out of memory partway. If you move hundreds of photos every week, the iPhone settings above or installed software will suit you better.

When the form also has a size or pixel limit

ID photo uploads and application forms sometimes set a maximum file size or pixel width as well. The image resizer accepts HEIC directly, shrinks it by width, height, longest side or percentage, and saves the result. Its output format starts on PNG, so switch it to JPG for photos. The new dimensions are added to the file name.

Resize photos, HEIC included

If the form wants several photos as one PDF, the image to PDF tool takes HEIC files as they are and converts each one to JPG on the way in. Drag the list to reorder the pages, then choose Match image size or Fit to A4.