Since iOS 11, iPhones save photos as HEIC ("High Efficiency") by default. It saves storage, but the files confuse Windows PCs, Android phones, and plenty of websites. You have two fixes: stop the iPhone creating HEICs, and convert the ones you already have.
To stop it: Settings > Camera > Formats > Most Compatible. Your iPhone will shoot JPG from now on. For the HEICs already in your library, you don't need to install a converter app and grant it full photo access — open a browser converter in Safari, convert, and save the JPGs back to Photos with the share sheet.
Convert HEIC to JPG in 3 steps
- In Safari, open the faymox HEIC Converter.
- Tap to choose HEIC photos from your photo library or Files.
- Convert to JPG, then use the share button to save the results back to Photos.
FAQ
How do I stop my iPhone from saving HEIC photos?
Go to Settings > Camera > Formats and choose "Most Compatible". New photos will be JPG. Existing HEICs stay as they are until converted.
Can I convert HEIC to JPG without downloading an app?
Yes — the converter above runs as a web page in Safari. Nothing to install, and your photos never leave the phone.
How do I send HEIC photos to an Android user?
Convert to JPG first, then share. Android's HEIC support is inconsistent across manufacturers, while JPG works on every phone ever made.