orient

The orient attribute indicates how a marker is rotated when it is placed at its position on the shape.

You can use this attribute with the following SVG elements:

Example

<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <marker id="arrow" viewBox="0 0 10 10" refX="5" refY="5"
        markerWidth="6" markerHeight="6"
        orient="auto-start-reverse">
      <path d="M 0 0 L 10 5 L 0 10 z" />
    </marker>

    <marker id="dataArrow" viewBox="0 0 10 10" refX="5" refY="5"
        markerWidth="6" markerHeight="6"
        orient="-65deg">
      <path d="M 0 0 L 10 5 L 0 10 z" fill="red" />
    </marker>
  </defs>

  <polyline points="10,10 10,90 90,90" fill="none" stroke="black"
      marker-start="url(#arrow)" marker-end="url(#arrow)" />

  <polyline points="15,80 29,50 43,60 57,30 71,40 85,15" fill="none" stroke="grey"
      marker-start="url(#dataArrow)" marker-mid="url(#dataArrow)"
      marker-end="url(#dataArrow)" />
</svg>

Usage notes

Value auto | auto-start-reverse | <angle> | <number>
Default value 0
Animatable Yes (non-additive)
auto

This value indicates that the marker is oriented such that its positive x-axis is pointing in a direction relative to the path at the position the marker is placed.

auto-start-reverse

If placed by marker-start, the marker is oriented 180° different from the orientation that would be used if auto where specified. For all other markers, auto-start-reverse means the same as auto.

Note: This allows a single arrowhead marker to be defined that can be used for both the start and end of a path, i.e. which points outwards from both ends.

<angle>

This value indicates that the marker is oriented such that the specified angle is that measured between the shape's positive x-axis and the marker's positive x-axis.

Note: For example, if a value of 45 is given, then the marker's positive x-axis would be pointing down and right in the shape's coordinate system.

<number>

This value indicates an angle in degrees. The marker is oriented such that the specified angle is that measured between the shape's positive x-axis and the marker's positive x-axis.

Specifications

Specification Status Comment
Scalable Vector Graphics (SVG) 2
The definition of 'orient' in that specification.
Candidate Recommendation Added the auto-start-reverse value and simplified the descriptions of the values.
Scalable Vector Graphics (SVG) 1.1 (Second Edition)
The definition of 'orient' in that specification.
Recommendation Initial definition

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
orient
Yes
12
Yes
Yes
Yes
Yes
Yes
Yes
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Yes
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Yes

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https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/orient