Each major browser has a different plug-in architecture, which means that there’s a unique version of Flash Player for it: ActiveX is for Internet Explorer. NPAPI is for Firefox and other NPAPI-based browsers. PPAPI is for Google Chrome and other Chromium-based browsers.Click to see full answer. Moreover, do you need both Npapi and Ppapi?That is the reason why you see two Flash plug-in versions, NPAPI and PPAPI, on the Adobe website. So, if you run only Safari or Firefox, PPAPI is not necessary for you. In case you surf the Internet with other browsers as well, you need both versions of Adobe Flash Player.Furthermore, what is Ppapi plug in for Flash Player? PPAPI Plug-in is for Flash Player in Chrome. Only download Flash Player updates from either System Preferences > Flash Player > Check for Updates or from the Official Adobe Website. Other Flash Player updates are bogus and will install malware. To uninstall all Google apps and Opera follow the developers instructions. In this way, what is the difference between Npapi and Ppapi? NPAPI stands for Netscape Plugin API and was developed by Netscape back in 1995. In fact, any web browser forked or built using the Mozilla Firefox code will use NPAPI version of Adobe Flash Player. PPAPI stands for Pepper Plugin API and is developed by Google for the Chrome web browser.What is Adobe Flash Player ActiveX and do I need it?The Adobe Flash Player ActiveX is software for viewing multimedia, Rich Internet Applications, and streaming video and audio, on a computer web browser. Flash Player is freely available as a plugin for recent versions of web browsers (such as Internet Explorer, Mozilla Firefox, Opera, and Safari) on selected platforms.