stroke-linecap

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.

Thestroke-linecap attribute is a presentation attribute defining the shape to be used at the end of open subpaths when they are stroked.

Note:As a presentation attribute,stroke-linecap also has a CSS property counterpart:stroke-linecap. 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 6 6" xmlns="http://www.w3.org/2000/svg">  <!-- Effect of the (default) "butt" value -->  <line x1="1" y1="1" x2="5" y2="1" stroke="black" stroke-linecap="butt" />  <!-- Effect of the "round" value -->  <line x1="1" y1="3" x2="5" y2="3" stroke="black" stroke-linecap="round" />  <!-- Effect of the "square" value -->  <line x1="1" y1="5" x2="5" y2="5" stroke="black" stroke-linecap="square" />  <!--  the following pink lines highlight the  position of the path for each stroke  -->  <path d="M1,1 h4 M1,3 h4 M1,5 h4" stroke="pink" stroke-width="0.025" /></svg>

Usage notes

Value	`butt` \|`round` \|`square`
Default value	`butt`
Animatable	discrete

butt

Thebutt value indicates that the stroke for each subpath does not extend beyond its two endpoints. On a zero length subpath, the path will not be rendered at all.

Example

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

html

<svg viewBox="0 0 6 4" xmlns="http://www.w3.org/2000/svg">  <!-- Effect of the "butt" value -->  <path d="M1,1 h4" stroke="black" stroke-linecap="butt" />  <!-- Effect of the "butt" value on a zero length path -->  <path d="M3,3 h0" stroke="black" stroke-linecap="butt" />  <!--  the following pink lines highlight the  position of the path for each stroke  -->  <path d="M1,1 h4" stroke="pink" stroke-width="0.025" />  <circle cx="1" cy="1" r="0.05" fill="pink" />  <circle cx="5" cy="1" r="0.05" fill="pink" />  <circle cx="3" cy="3" r="0.05" fill="pink" /></svg>

Theround value indicates that at the end of each subpath the stroke will be extended by a half circle with a diameter equal to the stroke width. On a zero length subpath, the stroke consists of a full circle centered at the subpath's point.

Example

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

html

<svg viewBox="0 0 6 4" xmlns="http://www.w3.org/2000/svg">  <!-- Effect of the "round" value -->  <path d="M1,1 h4" stroke="black" stroke-linecap="round" />  <!-- Effect of the "round" value on a zero length path -->  <path d="M3,3 h0" stroke="black" stroke-linecap="round" />  <!--  the following pink lines highlight the  position of the path for each stroke  -->  <path d="M1,1 h4" stroke="pink" stroke-width="0.025" />  <circle cx="1" cy="1" r="0.05" fill="pink" />  <circle cx="5" cy="1" r="0.05" fill="pink" />  <circle cx="3" cy="3" r="0.05" fill="pink" /></svg>

square

Thesquare value indicates that at the end of each subpath the stroke will be extended by a rectangle with a width equal to half the width of the stroke and a height equal to the width of the stroke. On a zero length subpath, the stroke consists of a square with its width equal to the stroke width, centered at the subpath's point.

Example

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

html

<svg viewBox="0 0 6 4" xmlns="http://www.w3.org/2000/svg">  <!-- Effect of the "square" value -->  <path d="M1,1 h4" stroke="black" stroke-linecap="square" />  <!-- Effect of the "square" value on a zero length path -->  <path d="M3,3 h0" stroke="black" stroke-linecap="square" />  <!--  the following pink lines highlight the  position of the path for each stroke  -->  <path d="M1,1 h4" stroke="pink" stroke-width="0.025" />  <circle cx="1" cy="1" r="0.05" fill="pink" />  <circle cx="5" cy="1" r="0.05" fill="pink" />  <circle cx="3" cy="3" r="0.05" fill="pink" /></svg>