Although .dmg is a macOS disk format, there are a number reasons of why you'd want open them on Windows computers. Here's how to get started.

iPhones can capture photos and video in high-efficiency formats which is great for image quality but can be a headache to open on your Windows PC.

To open an IMG file and view the contents in Windows 7, you need a third-party file extraction program such as WinRar or 7-Zip.

You can easily convert PNG files to JPG using software built into your Windows or Mac computer or third-party methods.