The font-size attribute refers to the size of the font from baseline to baseline when multiple lines of text are set solid in a multiline layout environment.

Note: As a presentation attribute, font-size can be used as a CSS property. See the css font-size property for more information.

As a presentation attribute, it can be applied to any element but it has effect only on the following eight elements: <altGlyph>, <text>, <textPath>, <tref>, and <tspan>

<svg viewBox="0 0 200 30" xmlns="http://www.w3.org/2000/svg">
  <text y="20" font-size="smaller">smaller</text>
  <text x="100" y="20" font-size="2em">2em</text>

Usage notes

Value <absolute-size> | <relative-size> | <length-percentage>
Default value medium
Animatable Yes

For a description of the values, please refer to the CSS font-size property.


Browser compatibilityUpdate compatibility data on GitHub

Chrome Edge Firefox Internet Explorer Opera Safari
font-size ? ? ? ? ? ?
Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
font-size ? ? ? ? ? ?

See also

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