The autoplay attribute on an <audio> tag specifies that the audio starts playing once the page is loaded.
Without this attribute the user must start the audio.
An autoplay attribute on an <audio> tag. To avoid surprises, autoplay is disabled on this page. Click 'Try It live' to see it enabled.
<audio autoplay controls>
<source src="/media/epic.mp3" type="audio/mpeg">
<source src="/media/epic.wav" type="audio/wav">
</audio>
With this attribute, the audio file will start playing even before the entire file is loaded.
Suddenly playing an audio may startle users because they are not expecting it.
It is usually best to give users control over when to start.
<audio autoplay>
Here is when autoplay support started for each browser:
 Chrome
|
4.0 | Jan 2010 |
 Firefox
|
3.5 | Jun 2009 |
 IE/Edge
|
9.0 | Mar 2011 |
 Opera
|
11.5 | Aug 2011 |
 Safari
|
4.0 | Jun 2009 |
