Adobe Flash Player NPAPI

Watch Flash videos and play games made in Flash directly in the Mozilla Firefox web browser. It works as a browser extension and can be disabled at any point for security purposes. It's recommended to keep the plug-in up-to-date in order to avoid possible online threats.

Adobe Flash Player NPAPI is Flash Player for Firefox.
Adobe Flash Player is a free program that can be used to run flash animations in browsers. Many of the YouTube videos require it since they are encoded in FLV format. This version of the flash player can be used with Firebox browser.