NPAPI | Article about NPAPI by The Free Dictionary
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NPAPI(Netscape Plug-in API) A programming interface for browser plug-ins originally developed by Netscape. The plug-in identifies the content it supports, and when that data must be rendered, the browser launches the appropriate plug-in. For example, clicking a PDF file in the browser launches the Adobe Acrobat Reader plug-in. Superseded by the Pepper Plug-in API (PPAPI), newer Web browsers no longer support NPAPI. See NSAPI, PPAPI and Netscape.
References in periodicals archive
Dynamic Web TWAIN V10 Helps Developers Seamlessly Transition Away from Less-Supported NPAPI Plugins for Scanning Documents in HTML5-Based Chrome and Now Also Firefox 27 and Above
This new SDK edition enables connections to TWAIN-based scanners in Chrome and Firefox browser versions which do not support NPAPI.
In May Google dropped support of NPAPI
plugins for its Chrome browser.