.dmg

Apple disk image, the UDIF container format used to distribute and mount macOS software

Handled by macOS itself

Format facts

MIME type: application/x-apple-diskimage
Apple UTI: com.apple.disk-image
Stock Quick Look: no stock preview
Planned approach (census): native-sufficient
Icon hint: renders
Prevalence: universal

Renderer note (from the census)

macOS mounts and previews DMG natively

Gotchas: Apple standard