Share extension type

A macOS Share extension exposes an app action in compatible Share menus. Sharing a Finder file or Safari page lists destinations able to accept that item. An installed app may be missing when it does not support the selected content type.

Setup and test

Apple explains how to enable Share-menu items in System Settings > General > Login Items & Extensions. Test with a photo, a Finder file, and a Safari page separately. Apps accept different input types, so use the material you actually plan to send.

Professional perspective

Macworld discusses extension settings as a way to expose and organize app actions, including Share destinations. The practical expert point is that an app name in the menu does not mean it accepts every format. Open the destination first if it requires account sign-in.

When a destination is missing

An enabled extension can still be absent if it cannot handle the selected item. Check app updates, the Share toggle, and content type, then try the app’s own import flow. Profiles may restrict work Macs, and setting labels vary across macOS releases.

Sources