how to define height and width in html code example

Example: html img size

<p><img src="image/example.jpg" alt="Example1" width="193" height="130"> (width:193px, height:130px)</p>

<p><img src="image/example.jpg" alt="Example2" width="96" height="65"> (width:96px, height:65px)</p>

<p><img src="image/example.jpg" alt="Example3" width="100%" height="130"> (width:100%, height:130px)</p>