By the end of 2016, Mozilla will cut off support for Netscape Plugin Application Programming Interface (NPAPI) plugins.
Mozilla says it’s due to many of the services offered via NPAPI — like streaming video and clipboard access — are available as native Web APIs. In addition to ease and performance, Mozilla says NPAPI presents security risks:
As browsers and the Web have grown, NPAPI has shown its age. Plugins are a source of performance problems, crashes, and security incidents for Web users.
Google Chrome and Microsoft Edge have already dropped support for NPAPI plugins, so Mozilla is playing a bit of catch-up here. For those of you who want Flash to die, no luck this time — Mozilla says it will still support Flash for Firefox ”as an exception to the general plugin policy.”
➤ NPAPI Plugins in Firefox [Mozilla]