Text in a <title> element is not rendered as part of the graphic, but browsers usually display it as a tooltip. If an element can be described by visible text, it is recommended to reference that text with an aria-labelledby attribute rather than using the <title> element.
Note: For backward compatibility with SVG 1.1, <title> elements should be the first child element of their parent.
Example
<svgviewBox="0 0 20 10"xmlns="http://www.w3.org/2000/svg"><circlecx="5"cy="5"r="4"><title>I'm a circle</title></circle><rectx="11"y="1"width="8"height="8"><title>I'm a square</title></rect></svg>