WebAssembly Worker Based Threads

The WebAssembly Threads feature allows multiple WebAssembly instances in separate Web Workers to share a single WebAssembly.Memory object. As with SharedArrayBuffers in JavaScript, this allows very fast communication between the Workers. This can be used to offload computation to another thread to keep the main thread and its UI responsive.



Working draft or equivalent

Status in Chromium


Origin trial (tracking bug) in:

  • Chrome for desktop release 70

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.


Last updated on 2019-01-09