The X3D Working Group is improving the encoding capabilities of X3D to better handle the needs of today's content distribution. We have made a call for contributions for complete or partial solutions that allow X3D scenes to be compressed for faster and more efficient delivery of content across networks. The call addresses both geometric and information-theoretic compression of X3D scenes. 

Web3D Standardization Roadmap efforts are maturing steadily.  Primary technologies being integrated:

a.  Geometric compression: Now considering glTF 2.0 support in X3D Abstract Specification and all encodings

• Shape Resource Container (SRC) with 2016-2017 integration efforts for SRC and glTF alignment are complete

b.  Information compression: Efficient XML Interchange (EXI) recommendations, World Wide Web Consortium (W3C)

• Prior summary:  X3D Efficient Binary Encoding: Progress Summary, 23 August 2015

Relevant references:

c. 3D Graphics Compress Call for Contributions (Press Release)

d. X3D Compressed Binary Encoding Call For Contributions

e. X3D Binary Compression Capabilities and Plans (Working document in Public Wiki)

f. Current X3D Compressed Binary Encoding (CBE) Specification ISO/IEC 19776-3

g. X3D Graphics Standards: Specification Relationships (.pdf)

h. Efficient XML Interchange (EXI) Format 1.0, W3C Recommendation

i.  X3D Efficient Binary Encoding (EBE), Web3D 2015 Conference, Heraklion Crete, 18 June 2015

For more information, please contact the X3D Working Group.