The iPhone's HEIC file format is better than JPEG, but it's not always compatible, so you need to convert it.

Luckily, I didn't have to. iMazing HEIC Converter is a free utility (available for both Windows and Mac) that can batch-convert HEIC photos to JPEG or PNG format.

The HEIC image format offers smaller file sizes at great quality but can cause issues with some apps due to the lack of universal support. Quickly convert HEIC to JPEG on Mac by dragging images ...

High Efficiency Image Containers, or HEIC files, are typically unique to Apple products, so here’s how iPhone or iPad owners can convert their images to JPG to combat any compatibility issues ...

Converting an HEIC file to the more widely-accepted JPEG format isn’t a difficult process, and we’ve put together this guide to help you every step of the way.