Introduction

Pepper is an interface that web browsers (specifically, Chromium) provide for implementing browser plugins. Pepper started out as an extension to Mozilla's widely-used NPAPI interface, but Pepper v2 provides a new API that is not an extension to NPAPI.

NaCl's integration with Chromium is implemented using Pepper. However, NaCl also makes a Pepper-based interface available to web apps over IPC.

References

• http://code.google.com/p/ppapi/: Project containing the interface definitions (C header files)
  • Concepts - wiki page
• https://wiki.mozilla.org/Plugins:PlatformIndependentNPAPI
• plugin-futures mailing list