From:  Chris Mills <>
Date:  11 Nov 2015 00:52:00 Hong Kong Time

Muting web audio when a screenreader is saying something


I was having an interesting conversation with Henny Swan from The Paciello Group last week - she was saying that a very common complaint from screenreader users that she hears is web-based audio drowning out screenreader output when users navigate to a web page that features audio or video tags, etc. Especially ones set to autoplay.

I was wondering if it would be possible to write an addon that mutes (or at least reduces the volume of) audio coming from a webpage when a screenreader is saying something. Is there any kind of custom event we can use for this? I am guessing the answer might be no, as screenreaders tend to work on the OS level rather than the browser level, but I might be surprised.


Chris Mills
 Senior tech writer || Mozilla || MDN || @chrisdavidmills