Graphviz Editor — 6 Layout Engines, Templates & Export

Free Graphviz DOT Editor — Visualize Graphs Online

Write Graphviz DOT language and see your graph rendered live. Supports directed graphs, undirected graphs, clusters, trees, ER diagrams, and network topologies. Choose from 6 layout engines.

Key Features

  • Live DOT language rendering with @viz-js/viz (WASM)
  • 6 layout engines: dot, neato, fdp, sfdp, twopi, circo
  • 6 built-in templates: directed, undirected, cluster, tree, ER, network
  • Zoom and pan preview
  • Export as SVG or PNG
  • Resizable split panels

SimplyUtils vs Competitors

FeatureSimplyUtilsEdotorGraphvizOnlineDreampuf
Multiple engines
Templates
Export SVG + PNG
Zoom control
Free to use

Frequently Asked Questions

What is Graphviz DOT language?

DOT is a plain text graph description language. You define nodes and edges in a simple syntax, and Graphviz renders them as a visual graph. It's widely used for software architecture diagrams, dependency graphs, and flowcharts.

What's the difference between digraph and graph?

digraph creates a directed graph where edges have arrows (A -> B). graph creates an undirected graph with plain connections (A -- B).

Which layout engine should I use?

dot is best for hierarchical diagrams (flowcharts). neato and fdp are better for network/force-directed layouts. circo arranges nodes in a circle. twopi arranges in a radial tree.