An "options" attribute is added to PushSubscription objects that the PushManager.subscribe(...) and getSubscription() promises resolve to. It reflects the options passed in when subscribing. This allows web developers to see what applicationServerKey each PushSubscription is associated with, and hence what key their server will need to present when sending messages. Previously web developers with more than one applicationServerKey had to keep track of this separately (e.g. in IndexedDB).



Specification link

Specification currently under development in a Working Group

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.


Last updated on 2020-11-09