Why Won't My iPhone Photos Open on Windows? (HEIC, Explained)

You AirDrop or email a photo from your iPhone, and on a Windows PC, an Android phone or an older app it just won't open. The file ends in .HEIC, and many things outside Apple's world don't know what to do with it. It isn't a bug: it's the format iPhones have used by default since iOS 11.

Why Apple uses HEIC

HEIC (High Efficiency Image Container) stores photos with the same compression technology as HEVC (H.265) video. At the same visual quality, a HEIC photo is roughly half the size of a JPEG. With thousands of photos on a phone, that's a lot of storage saved, which is why Apple made it the default.

The catch is support. Windows only opens HEIC after you install the HEIF and HEVC extensions from the Microsoft Store, some Android apps still can't read it, and plenty of upload forms, printing services and photo editors reject it outright. JPEG, by contrast, has opened everywhere since the 1990s.

Does converting HEIC to JPG lose quality?

Barely, if you do it once. Both formats are lossy, but at a high quality setting a converted JPG looks the same as the HEIC original in almost every case. It will be a bigger file, because JPEG compresses less efficiently.

What to avoid is converting back and forth repeatedly, or re-saving the same JPG many times after edits: each lossy save compounds a little quality loss. Convert once, then work from the JPG.

What to convert to

• Sending to Android or Windows users: HEIC to JPG. JPG is the safest universal choice.
• Editing or archiving: HEIC to PNG. PNG is lossless, but files are several times larger.
• A website rejects your photo: HEIC to JPG is almost always what these forms expect.
• A document or application: HEIC to PDF combines several photos into one PDF.

Or stop it happening

On your iPhone, go to Settings → Camera → Formats and choose Most Compatible. New photos are saved as JPG from then on; existing ones stay HEIC. The step-by-step version is in how to stop your iPhone saving HEIC.

Converting a whole camera roll

For more than a handful of photos, batch conversion is the practical approach: the HEIC converter takes up to 30 photos at a time and gives you a single ZIP. Uploads are deleted automatically within an hour.

The short version

HEIC isn't broken. It's a more efficient format that hasn't reached universal support yet. When compatibility matters more than file size, convert HEIC to JPG and move on.