The CanvasRenderingContext2D.imageSmoothingEnabled property of the Canvas 2D API can be set to change if images are smoothed (true, default) or not (false). On getting the imageSmoothingEnabled property, the last value it was set to, is returned.
The matchAll() method of the Clients interface returns a Promise for a list of service worker clients. Include the options parameter to return all service worker clients whose origin is the same as the associated service worker's origin. If options are not included, the method returns only the service worker clients controlled by the service worker.
The DeviceLightEvent provides web developers with information from photo sensors or similiar detectors about ambient light levels near the device. For example this may be useful to adjust the screen's brightness based on the current ambient light level in order to save energy or provide better readability.