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# What is a plug-in?

A plug-in is a small program that works with applications to extend their capabilities and provide special features. Safari uses plug-ins to handle multimedia content on webpages, such as pictures, music, and video.

Safari comes with several plug-ins preinstalled. To see them, choose Help > Installed Plug-ins.

### Related Topics

Blocking content

If a plug-in is missing

If you need a PowerPC plug-in