APIs for creating, composing, and consuming streams of data, that map efficiently to low-level I/O primitives, and allow easy composition with built-in backpressure and queuing.




Specification link

Specification currently under development in a Working Group

Status in Chromium


Enabled by default

Consensus & Standardization

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



We're shipping the Streams API features step-by-step. See the related entries with the "Streams API" prefix and the "Fetch API" prefix for information about each sub feature. Note that the Streams API implemented in IE is different from the WHATWG one. Edge is implementing the WHATWG one. Readable byte streams are not yet implemented in Chrome.

Search tags

ReadableStream, WritableStream, TransformStream,

Last updated on 2020-11-09