To support the embedding of WebAssembly into different environments, its specification is split into layers that are specified in separate documents.
Defines the semantics of WebAssembly modules independent from a concrete embedding. The WebAssembly core is specified in a single document:
WebAssembly: defines the structure of WebAssembly modules, their instruction set, and their representation in binary and text format, as well as the semantics of validation, instantiation, and execution.
- Browser version (multi-page)
- W3C version (single-page)
- PDF version
Define application programming interfaces (APIs) enabling the use of WebAssembly modules in concrete embedding environments. Currently, two APIs are specified:
Source for these documents is available here.