Document Name: W3C TR
Document URI:
Online Version:
Organization: World Wide Web Consortium (W3C)
Series: Technical Report (TR)
Abstract: This document is the specification of the Efficient XML Interchange (EXI) format. EXI is a very compact representation for the Extensible Markup Language (XML) Information Set that is intended to simultaneously optimize performance and the utilization of computational resources. The EXI format uses a hybrid approach drawn from the information and formal language theories, plus practical techniques verified by measurements, for entropy encoding XML information. Using a relatively simple algorithm, which is amenable to fast and compact implementation, and a small set of datatype representations, it reliably produces efficient encodings of XML event streams. The grammar production system and format definition of EXI are presented.

Specified Web Concepts:

HTTP Content Codings


Media Types


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