Edge Markers

Svelte Flow has built-in support for different marker types for your edges. It’s possible to add your own SVG markers, too.

<script lang="ts">
  import { SvelteFlow, Background, type Edge, type Node } from '@xyflow/svelte';
 
  import '@xyflow/svelte/dist/style.css';
 
  import { initialNodes, initialEdges } from './nodes-and-edges';
 
  // the custom edge marker is an SVG with a marker element.
  // That marker has the id "logo". We can use that id to reference it,
  // by using the markerStart and markerEnd edge options.
  import CustomEdgeMarker from './CustomEdgeMarker.svelte';
 
  let nodes = $state.raw<Node[]>(initialNodes);
  let edges = $state.raw<Edge[]>(initialEdges);
</script>
 
<SvelteFlow bind:nodes bind:edges fitView>
  <CustomEdgeMarker />
  <Background />
</SvelteFlow>

Feature Overview