v151 · Permissions Policy · Fallback explorer

Capability fallback explorer

Choose a policy, replay real iframe focus attempts, and generate the header or iframe attribute that keeps keyboard focus under user control.

policy model

Embed policy

Try typing here. A hostile embed should not steal this focus unless the user interacts with it.

Waiting for replay.

Need the exact API surface, compatibility boundaries, errors, lifecycle, and source links? Read the matching gendn reference ↗