November 2013: For more details about NPAPI deprecation, see the NPAPI Deprecation Developer Guide.Moving forward, our goal is to evolve the standards-based web platform to cover the use cases once served by NPAPI. In cases where standard web technologies are not yet sufficient, developers and administrators can use NaCl, Apps, Native Messaging API, and Legacy Browser Support to transition from NPAPI. Existing installations will continue to work until Chrome fully removes support for NPAPI. In September 2014, all existing NPAPI-based Apps and Extensions will be unpublished.
Also in May, listings for NPAPI-based Apps and Extensions will be removed from the Web Store home page, search results, and category pages.
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Developers will be able to update their existing NPAPI-based Apps and Extensions until May 2014, when updates will be blocked. Starting today, no new Apps or Extensions containing NPAPI-based plug-ins will be allowed in the Web Store. The Chrome Web Store will also be phasing out NPAPI support.
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Note that the built-in Flash plug-in and PDF viewer will be unaffected because they don’t use NPAPI. We expect this to happen before the end of 2014, but the exact timing will depend on usage and user feedback. Eventually, however, NPAPI support will be completely removed from Chrome. In the short term, end users and enterprise administrators will be able to whitelist specific plug-ins. * Already blocked by default for security reasons. Silverlight (launched by 15% of Chrome users last month).To avoid disruption to users, we will temporarily whitelist the most popular NPAPI plug-ins that are not already blocked for security reasons. Starting in January 2014, Chrome will block webpage-instantiated NPAPI plug-ins by default on the Stable channel. Still, we appreciate that it will take time to transition away from NPAPI, so we will be rolling out this change in stages. Based on anonymous Chrome usage data, we estimate that only six NPAPI plug-ins were used by more than 5% of users in the last month. NPAPI isn’t supported on mobile devices, and Mozilla plans to make all plug-ins except the current version of Flash click-to-play by default. We feel the web is ready for this transition. Because of this, Chrome will be phasing out NPAPI support over the coming year. Meanwhile, NPAPI’s 90s-era architecture has become a leading cause of hangs, crashes, security incidents, and code complexity. Today’s browsers are speedier, safer, and more capable than their ancestors. In fact, many modern web platform features-including video and audio support-first saw mainstream deployment through NPAPI-based plug-ins.īut the web has evolved. The Netscape Plug-in API ( NPAPI) ushered in an early era of web innovation by offering the first standard mechanism to extend the browser.
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