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iPhone HEIC photos won't open on Windows

You copy iPhone photos to a Windows PC through iCloud, a USB cable or a cloud drive. The files end in .HEIC. Photos says it needs an extension, or an upload form says the file type is not allowed.

The quickest fixes are on the iPhone and in iCloud: both can hand you JPG instead. On the PC, Windows opens HEIC once two Microsoft Store extensions are installed; one is free and one costs $0.99 in the US store. Our converter turns HEIC into JPG only in Safari, so it helps on a Mac, iPhone or iPad, not on Windows.

What people run into

How to check what you have

  1. Turn on file name extensions in File Explorer's View menu. iPhone photos in the newer format end in .HEIC or .heic.
  2. If Photos says you need an extension to use the file, Windows has no HEIC decoder yet. Microsoft's help page names that message.
  3. A name ending in .jpg does not make a file a JPG. Forms and apps that read the bytes still see HEIC. Rename it back and convert it instead.
  4. Note how the photos reached the PC: USB cable, AirDrop or mail, iCloud.com or iCloud for Windows. Each route has its own setting below.

What our converter does with HEIC

We opened the same 3 HEIC files with this site's own code in two browser engines: WebKit, the engine of Safari, and Chromium, the engine of Chrome and Edge. Our browser tests show the same unsupported message in Firefox as in Chrome.

Opening our HEIC files in the converter

Browser engineBrowsersFilesOpened by our converterOpened by the browser itself
WebKitSafari on Mac, iPhone and iPad33/3–
ChromiumChrome and Edge30/30/3

We try the browser's own image decoder only when our converter refuses a file. In Chromium every file got our unsupported-format message, and the browser's own decoder could not open them either. On Windows that means Chrome and Edge.

Source: our test on 2026-11-10 (harness eacd79c, site code eacd79c), headless Chromium 145 and WebKit 26.0 on a desktop Mac, 3 HEIC files we made on a Mac. How we test

HEIC to JPG in Safari's engine: how much bigger

JPG qualityFilesSmallestMedianLargest
92 (default)132.3×2.9×3.5×
80131.8×2.3×2.7×

Each cell is how many times the size of the HEIC the JPG came out. Apple says HEIF stores photos more tightly than JPEG, so a JPG copy is bigger; the bigger-file guide covers other cases. Our files were made on a Mac, not by an iPhone camera; the HEIC to JPG page lists them one by one. 0 of the 13 JPGs carried location data.

Source: our test on 2026-11-10 (harness version 1.1.0, site code eacd79c), headless WebKit 26.0 on a desktop Mac, 13 HEIC files we made on a Mac. How we test

Fixes on the iPhone and in iCloud

  1. New photos as JPG: on the iPhone open Settings, Camera, Formats and choose Most Compatible. Apple says new photos then use JPEG. Photos you already took stay HEIC.
  2. USB cable: on the iPhone open Settings, Apps, Photos, and look under Transfer to Mac or PC. Apple says photos imported to a PC might be converted to JPEG, and that Keep Originals stops this. Choose Automatic to let it convert. A user report above shows it can still send HEIC when the PC says it reads HEIC.
  3. AirDrop, Messages and email: Apple says a photo might be sent as JPEG when the receiving device does not support HEIF. Microsoft suggests emailing the photos to yourself for the same reason. Neither promises it, so check the file you get.
  4. iCloud.com: select the photos, open More Download Options and choose Most Compatible. Apple lists that option as JPEG. Unmodified Originals and Highest Resolution can give you HEIC.
  5. iCloud for Windows: Apple lists an optional setting, Download High-Efficiency format photos and videos, which keeps HEIC. Users report it can be stuck on once the HEVC extension is installed; downloading from iCloud.com with Most Compatible is a way around it.

Fixes on the Windows PC

  1. Install both extensions from the Microsoft Store. Microsoft's help page says you need both, even for photos only: HEIF Image Extensions, free, and HEVC Video Extensions, $0.99. The US store showed those prices on 2026-11-10. The HEIF listing itself says the HEVC package is needed to view .heic files.
  2. Does Windows open HEIC without them? Reports conflict. An office reports that some of its PCs open HEIC and others do not. Some PC makers install a free edition, HEVC Video Extensions from Device Manufacturer; users say the Store will not install it on every PC. Try one HEIC on your PC before you buy.
  3. Use our converter on a Mac, iPhone or iPad: open HEIC to JPG in Safari. The photo is converted on the device and nothing is uploaded. In Chrome, Edge or Firefox the page says the file is not supported, so on Windows use one of the fixes above.
  4. If a form also has a KB limit, make the JPG first, then put it into the compressor.

What our test covers

Both tests run this site's own code in a browser on a desktop Mac. Our HEIC files were made on a Mac with Apple's encoder, some shaped like iPhone photos; none came from an iPhone camera.

We did not test Windows, the Microsoft extensions or iCloud. Those steps come from the official pages and user reports below. See how we test.

Sources

Official pages say what the company states. User reports are what people describe on forums; they are not rules, and we use no number from them.

Official

User reports

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