Tryit Editor v1.8

Source Code:

<!DOCTYPE html>
<html>
<body>

<img src="w3html.gif" alt="W3Schools.com" width="100" height="132" longdesc="w3s.txt">

<p>The longdesc attribute is not supported in HTML5.</p>

</body>
</html>

Result:

W3Schools.com - Try it yourself

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