stroke-width

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.

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 (see stroke-width for a full list), but as an inherited property, it may be applied to elements such as <g> and still have the intended effect on descendant elements' strokes.

Note: As a presentation attribute stroke-width can be used as a CSS property. See stroke-width for more.

You can use this attribute with the following SVG elements:

Example

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

Value <length> | <percentage>
Default value 1px
Animatable Yes

Note: A percentage value is always computed as a percentage of the normalized viewBox diagonal length.

Specifications

Specification
Scalable Vector Graphics (SVG) 2
# StrokeWidth

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
stroke-width

Legend

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Full support
Full support