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  Global attributes
Usage notes
 Sources and References


The <marker> element defines the graphic that is to be used for drawing arrowheads or polymarkers on a given <path>, <line>, <polyline> or <polygon> element.

Markers are attached to shapes using the marker-start, marker-mid, and marker-end properties.


SVG Code Input:
<?xml version="1.0" standalone="no"?>

<svg style='border:1px solid black' width='480' height='450' version='1.1'  xmlns=''>
<svg width='426' height='426' viewBox='-25, -25, 426, 426' version='1.1'  xmlns=''>
   <pattern id='pattern-halfgrid' x='0' y='0' width='5' height='5' patternUnits='userSpaceOnUse'>
       <path d='M 5 0 L 0 0 0 5' fill='none' stroke='red' stroke-width='0.2'/>
   <pattern id='pattern-grid' x='0' y='0' width='10' height='10' patternUnits='userSpaceOnUse'>
       <rect width='10' height='10' fill='url(#pattern-halfgrid)' stroke-width='0'></rect>
       <path d='M 10 0 L 0 0 0 10' fill='none' stroke='black' stroke-width='0.2'/>
   <rect x='0' y='0' width='100%' height='100%' fill='url(#pattern-grid)' stroke-width='0'></rect>
   <svg transform='scale(0.938967136150235)' preserveAspectRatio='xMinYMin' viewBox='0 0 100 100' xmlns=''>
       <!-- arrowhead marker definition -->
       <marker id='arrow' viewBox='0 0 10 10' refX='5' refY='5'
           markerWidth='6' markerHeight='6'
           <path d='M 0 0 L 10 5 L 0 10 z' />

       <!-- simple dot marker definition -->
       <marker id='dot' viewBox='0 0 10 10' refX='5' refY='5'
           markerWidth='5' markerHeight='5'>
           <circle cx='5' cy='5' r='5' fill='red' />

   <!-- Coordinate axes with a arrowhead in both direction -->
   <polyline points='10,10 10,90 90,90' fill='none' stroke='black'
       marker-start='url(#arrow)' marker-end='url(#arrow)'  />

   <!-- Data line with polymarkers -->
   <polyline points='15,80 29,50 43,60 57,30 71,40 85,15' fill='none' stroke='grey'
       marker-start='url(#dot)' marker-mid='url(#dot)'  marker-end='url(#dot)' />
<text x='5' y='17' font-size='20'>(0,0)</text>
<text x='395' y='17' font-size='20'>(100,0)</text>
<text x='5' y='445' font-size='20'>(0,100)</text>
<text x='395' y='445' font-size='20'>(100,100)</text>
<circle cx='25' cy='25' r='2' fill='black'/>
<circle cx='425' cy='25' r='2' fill='black'/>
<circle cx='25' cy='425' r='2' fill='black'/>
<circle cx='425' cy='425' r='2' fill='black'/>
HTML Web Page Embedded Output:


markerHeight This attribute defines the height of the marker viewport. Value type: <length> ; Default value: 3; Animatable: yes markerUnits This attribute defines the coordinate system for the attributes markerWidth, markerHeight and the contents of the <marker>. Value typeuserSpaceOnUse|strokeWidth ; Default value: strokeWidth; Animatable: yes markerWidth This attribute defines the width of the marker viewport. Value type: <length> ; Default value: 3; Animatable: yes orient This attribute defines the orientation of the marker relative to the shape it is attached to. Value type: auto|auto-start-reverse|<angle> ; Default value: 0; Animatable: yes preserveAspectRatio This attribute defines how the svg fragment must be deformed if it is embedded in a container with a different aspect ratio. Value type: (none| xMinYMin| xMidYMin| xMaxYMin| xMinYMid| xMidYMid| xMaxYMid| xMinYMax| xMidYMax| xMaxYMax) (meet|slice)? ; Default value: xMidYMid meet; Animatable: yes refX This attribute defines the x coordinate for the reference point of the marker. Value type: left|center|right|<coordinate> ; Default value: 0; Animatable: yes refY This attribute defines the y coordinate for the reference point of the marker. Value type: top|center|bottom|<coordinate> ; Default value: 0; Animatable: yes viewBox This attribute defines the bound of the SVG viewport for the current SVG fragment. Value type: <list-of-numbers> ; Default value: none; Animatable: yes

Global attributes

Core Attributes Most notably: id, tabindex Styling Attributes class, style Conditional Processing Attributes Most notably: requiredExtensions, systemLanguage Presentation Attributes Most notably: clip-path, clip-rule, color, color-interpolation, color-rendering, cursor, display, fill, fill-opacity, fill-rule, filter, mask, opacity, pointer-events, shape-rendering, stroke, stroke-dasharray, stroke-dashoffset, stroke-linecap, stroke-linejoin, stroke-miterlimit, stroke-opacity, stroke-width, transform, vector-effect, visibility ARIA Attributes aria-activedescendant, aria-atomic, aria-autocomplete, aria-busy, aria-checked, aria-colcount, aria-colindex, aria-colspan, aria-controls, aria-current, aria-describedby, aria-details, aria-disabled, aria-dropeffect, aria-errormessage, aria-expanded, aria-flowto, aria-grabbed, aria-haspopup, aria-hidden, aria-invalid, aria-keyshortcuts, aria-label, aria-labelledby, aria-level, aria-live, aria-modal, aria-multiline, aria-multiselectable, aria-orientation, aria-owns, aria-placeholder, aria-posinset, aria-pressed, aria-readonly, aria-relevant, aria-required, aria-roledescription, aria-rowcount, aria-rowindex, aria-rowspan, aria-selected, aria-setsize, aria-sort, aria-valuemax, aria-valuemin, aria-valuenow, aria-valuetext, role

Usage notes


Specification Scalable Vector Graphics (SVG) 1.1 (Second Edition) (SVG)

Sources and References



ID: 220100015 Last Updated: 1/15/2022 Revision: 0 Ref:



  1., 1999, HTML 4.01 Specification: W3C Recommendation, updated 24 December 1999

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