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Common types used by APIs that dispatch events.


Description of a declarative rule for handling events.
An object which allows the addition and removal of listeners for a Chrome event.
Filters URLs for various criteria. If any of the given criteria match, then the whole filter matches.

Browser compatibility

Chrome Edge Firefox Firefox for Android Opera
Event Yes Yes No No 33
Rule Yes Yes No No 33
UrlFilter Yes Yes 50.0 50.0 33

Chrome incompatibilities



This API is based on Chromium's API. This documentation is derived from events.json in the Chromium code.

Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.

Document Tags and Contributors

 Contributors to this page: wbamberg
 Last updated by: wbamberg,