Graphviz
Graphviz creates diagrams from graph descriptions and provides open-source software for visualizing structural information.
About Graphviz
Graphviz is graph visualization software for representing structural information as diagrams of abstract graphs and networks. Users describe a graph in a simple text language, and the Graphviz layout programs produce a diagram.
Output can be an image, SVG for web pages, PDF or PostScript for inclusion in other documents, or an interactive graph browser. Diagrams can be styled with options for colors, fonts, tabular node layouts, line styles, hyperlinks, and custom shapes. The homepage names applications in networking, bioinformatics, software engineering, database and web design, machine learning, and visual interfaces for other technical domains.
Key features
- Creates diagrams from descriptions written in a simple text language
- Exports diagrams as images, SVG for web pages, or PDF and PostScript
- Displays graphs in an interactive graph browser
- Offers options for colors, fonts, and line styles
- Supports tabular node layouts, hyperlinks, and custom shapes
Best for: People who need to visualize networks, graphs, or other structural information from text descriptions, such as those working in networking, bioinformatics, software engineering, or machine learning.
Good for
- Graphs are defined in a simple text language rather than drawn by hand
- Multiple output formats suit both web pages and printed or shared documents
Graphviz at a glance
- Website
- graphviz.org
- Category
- Design & Creative › Charts & Data Visualization
- Type
- Online tool
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Charts & Data Visualization
Graphviz alternatives
Tools and sites you could use instead, ranked by how closely they match.
Kroki provides one API for generating diagrams from textual descriptions using libraries such as Mermaid, PlantUML, Graphviz, and D2.
Dia is free, open source drawing software for structured diagrams, with downloads, shapes, and documentation.
PlantUML generates UML and other diagrams from textual descriptions and exports results in formats including PNG, SVG, and PDF.
DiagramGPT generates diagrams from text prompts, with the project page describing diagram workflows for teams.
Swimlanes.io creates sequence diagrams from text in a browser and lets users download diagrams or share them through links.
UMLet provides free, open source UML drawing with a simple interface for making diagrams, including sequence and activity diagrams.
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Graphviz FAQ
Where can I ask questions about Graphviz?
Questions and comments can be posted in the Graphviz forum.
How do I report a bug in Graphviz?
Bugs and issues can be reported or viewed on the Graphviz Issues page.
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