Storage Foundation API is a storage API that resembles a very basic filesystem, with direct access to stored data through buffers and offsets. Our goal is to give developers flexibility by providing generic, simple, and performant primitives upon which they can build higher-level components. It's particularly well suited for Wasm-based libraries and applications that want to use custom storage algorithms to fine-tune execution speed and memory usage.


A generic, performant and low-level storage API would enable web developers to create or port storage libraries that offer the right guarantees and interface for their application. Pushing the storage layer onto the client-side allows developers to rely on interfaces that are cross-platform and widens the possible APIs from the ones currently provided by the Web Platform to the ones that could be ported or created.

Status in Chromium


Origin trial (tracking bug)

Consensus & Standardization

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


Intent to Prototype url

Intent to Prototype thread

Search tags

storage, nativeio, performance, low-level, generic, foundation,

Last updated on 2022-01-20