stroke-width

The stroke-width attribute is a presentation attribute defining the width of the stroke to be applied to the shape. It applies to any SVG shape or text-content element, but as an inherited property, it may be applied to elements such as {{SVGElement("g")}} and still have the intended effect on descendant elements' strokes.

[!NOTE] As a presentation attribute, stroke-width also has a CSS property counterpart: {{cssxref("stroke-width")}}. When both are specified, the CSS property takes priority.

You can use this attribute with the following SVG elements:

{{SVGElement('circle')}}
{{SVGElement('ellipse')}}
{{SVGElement('line')}}
{{SVGElement('path')}}
{{SVGElement('polygon')}}
{{SVGElement('polyline')}}
{{SVGElement('rect')}}
{{SVGElement('text')}}
{{SVGElement('textPath')}}
{{SVGElement('tspan')}}

Example

css

html,
body,
svg {
  height: 100%;
}

html

<svg viewBox="0 0 30 10" xmlns="http://www.w3.org/2000/svg">
  <!-- Default stroke width: 1 -->
  <circle cx="5" cy="5" r="3" stroke="green" />

  <!-- Stroke width as a number -->
  <circle cx="15" cy="5" r="3" stroke="green" stroke-width="3" />

  <!-- Stroke width as a percentage -->
  <circle cx="25" cy="5" r="3" stroke="green" stroke-width="2%" />
</svg>

Usage notes

<table class="properties"> <tbody> <tr> <th scope="row">Value</th> <td> <strong ><a href="/en-US/docs/Web/SVG/Guides/Content_type#length" ><length></a ></strong > | <strong ><a href="/en-US/docs/Web/SVG/Guides/Content_type#percentage" ><percentage></a ></strong > </td> </tr> <tr> <th scope="row">Default value</th> <td><code>1px</code></td> </tr> <tr> <th scope="row">Animatable</th> <td>Yes</td> </tr> </tbody> </table>

[!NOTE] A percentage value is always computed as a percentage of the normalized {{SVGAttr('viewBox')}} diagonal length.

Example

Usage notes

Specifications

Browser compatibility

See also