If an iPhone photo arrives as a .heic file and Windows refuses to open it, the first step is to check whether the PC can decode the format. Convert to JPG only if the app, upload form or person receiving the picture needs it.
Open the HEIC file first
- Copy one original to a working folder and open it in Microsoft Photos.
- If Photos asks for an extension, check Microsoft’s HEIF and HEVC guidance. Use the official Microsoft Store listings for HEIF Image Extensions and, if the file still needs it, HEVC Video Extensions. The HEVC option may cost money depending on what is already installed.
- Close and reopen the app, then test the same file. If one picture fails but others open, copy it again from the source; the transfer may be incomplete.
Make a JPG copy for sharing
Once Windows can decode the photo, try opening it in Paint. If your build opens the file, use File → Save as → JPEG picture and choose a new folder or filename. Otherwise use an editor with HEIC import and JPEG export, or export a compatible copy from the source device. Changing .heic to .jpg in File Explorer cannot convert the image.
Reopen the JPG and check its orientation, dimensions and colours. Keep the HEIC if you care about original quality, HDR, metadata or any associated Live Photo media. A JPEG export may not carry all of that over, and saving it repeatedly can reduce quality.
When the phone is still available
If the destination regularly rejects HEIC, Apple explains how to capture new photos in a more compatible format and when transfers may convert files. The camera format setting affects future captures; it does not turn existing photos into JPG files. For private pictures, use your device or an approved offline editor rather than uploading the originals to a converter.
