Graphviz DOT Renderer
Render Graphviz DOT graphs to SVG in your browser for free.
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What is Graphviz DOT Renderer?
The Graphviz DOT Renderer turns DOT graph descriptions into SVG diagrams directly in your browser using the real Graphviz engine compiled to WebAssembly. Edit the source for instant re-renders, zoom and pan large graphs, and export crisp SVG or white-background PNG files without any server involvement.
Key Benefits
- Authentic Graphviz layout, not an approximation
- Instant re-render while editing the DOT source
- Zoom and drag-to-pan for large graph outputs
- SVG and PNG export straight from the browser
- Private by design - graphs never leave your machine
Common Use Cases
- •Drawing architecture and dependency diagrams for docs
- •Sketching state machines and workflow graphs
- •Rendering DOT snippets from tutorials and books
- •Producing diagram assets for READMEs and wikis
How to Render a Graphviz DOT Graph
- Paste the DOT source: Paste your graph description, or load the example to see the syntax.
- Edit and re-render: The SVG diagram re-renders instantly as you edit the source.
- Zoom and pan: Use the zoom buttons and drag the canvas to inspect large graphs.
- Export the image: Download the diagram as SVG for crisp docs or PNG for slides and chats.
Key Features
- Real Graphviz engine compiled to WebAssembly, in-browser
- Instant SVG re-render on every source edit
- Zoom controls with drag-to-pan for large graphs
- One-click SVG export and white-background PNG export
- Clear error state for invalid DOT syntax
- No upload, no account - fully client-side
Frequently Asked Questions
Which DOT features are supported?
Everything the real Graphviz engine supports - node and edge shapes, labels, styles, ranks, clusters, and layout attributes - because the rendering runs the actual Graphviz engine compiled to WebAssembly.
Is my DOT source uploaded anywhere?
No. The Graphviz engine runs locally in your browser through WebAssembly, so graphs with internal architecture or private names never leave your machine.
Why did nothing render?
Most likely the DOT syntax has an error, in which case the error message appears above the canvas. The first load also needs a moment to fetch and start the WebAssembly engine.
What is the difference between the SVG and PNG exports?
SVG is vector-based and stays crisp at any zoom, ideal for documentation. PNG is a fixed-size raster with a white background, convenient for slides and chat apps.