An overview of glTF, the GL Transmission Format
Releases (as PDF files and PNG images) can be found in the releases section.
A Japanese version of this overview is available at https://github.com/randall2835/gltfOverviewJapanese
A Chinese version of this overview is available at https://github.com/leeyeel/gltfOverview-Chinese
Change log:
2022-08-14: Release of version 2.0.0d
- Updated extension name to 
EXT_materials_variants 
2022-08-14: Release of version 2.0.0c
- Updated extension list to contain short summaries of ratified extensions
 
2019-01-04: Release of version 2.0.0b
- Fixed typo in 
accessorssection - Updated extension information and links
 - Removed Catmull-Rom interpolation type
 
2017-10-15: Release of version 2.0.0a
- Moved 
byteStridefromaccessortobufferView 
2017-07-25: Release of version 2.0.0
- Updated for glTF 2.0
 
2016-06-13: Release of version 0.2.0
- Added section about vertex skinning
 - Added section about extensions
 - Explained usage of bufferView and accessors
 - Removed summary about "Rendering a glTF"
 - General layout updates
 
2016-05-09: Initial release of version 0.1.3