Implement a framework for exposing experimental features in the browser, but only to specific/registered origins, for limited duration and subject to global usage caps.


Status in Chromium


Enabled by default (tracking bug)

Consensus & Standardization

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

  • No signal
  • No signal
  • No signals



The motivation for this framework is best captured in the blog post "Doing Science On The Web" ( This framework is intended to enable incompatible web features to be delivered in a non-web-breaking manner.

Search tags

origin trials, trials, experiment, experiments, framework,

Last updated on 2020-11-09