Horizontal text alignment can be set using the
text-anchor attribute.
Output
 |
| SVG version |
Source
<svg width="200" height="100" xmlns="http://www.w3.org/2000/svg" >
<text x="50%" y="50" text-anchor="start" font-family="monospace">12345</text>
<text x="50%" y="70" text-anchor="end" font-family="monospace">12345</text>
<text x="50%" y="90" text-anchor="middle" font-family="monospace">12345</text>
</svg>