Origin Trials

Origin trials are a way for websites to opt-in to experimental web platform features.

They're similar to [Chrome's origin trials](https://developer.chrome.com/blog/origin-trials/).

Current Trials

Currently active trials are:

• OffscreenCanvas: Enables access to `OffscreenCanvas` on window and workers.
• COEP: credentialless: Enables the `credentialless` value for the `Cross-Origin-Embedder-Policy` header.

Requesting a trial for your website

In order to request a trial please click here:

• Origin trial request.

That will take you to Bugzilla with an already-prefilled template where you'd need to fill a few details (like trial name, website origin, whether subdomains should be included, and a suggested expiration date / other details if you know them). A token will be given to you in that bug.