Open HEIC photos on Windows

Why Windows needs an extension at all

HEIC images are compressed with HEVC, a codec covered by a large and fragmented set of patent pools. Bundling a decoder with the operating system means licensing from several of them, which is why Microsoft ships it as a separate component rather than including it.

The practical result is a file the operating system recognises by name and cannot display, producing an error that suggests corruption when the file is perfectly valid.

The extensions, and the confusing part

Two items are involved: HEIF Image Extensions, which handles the container, and HEVC Video Extensions, which handles the actual decoding. Photos need both, and the second has at various times been a paid listing while a device-manufacturer variant was free.

This is why instructions found online contradict each other — they were written at different points in that history, and availability has also varied by region and Windows version.

What installing them does not fix

The extensions teach Windows itself to display HEIC. They do not teach every application: older editors, many upload forms, and a great deal of third-party software still refuse the format, because each carries its own image loading code.

So installing them solves 'I want to look at my photos on this laptop' and does not solve 'I need to attach this to a form' or 'I need to send it to someone else'. Those need an actual conversion.

Converting instead of installing

Converting to JPEG sidesteps the codec question entirely and produces files that work in every application on every machine, including the ones you are sending them to.

• No system component to install, and no administrator rights required.
• The result opens on Windows, Android, older software and web forms alike.
• A browser-based converter carries its own decoder, so it works on a machine that cannot display HEIC at all.
• Convert from the originals, once, and keep them until you have checked the output.