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 ⁨March 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, 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 also has a CSS property counterpart: stroke-width. When both are specified, the CSS property takes priority.

You can use this attribute with the following SVG elements:

Example

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>