Mermaid
Mermaid generates diagrams such as flowcharts and sequence diagrams from text using syntax similar to Markdown.
About Mermaid
Mermaid is a source-code repository for generating diagrams, such as flowcharts or sequence diagrams, from text written in a style similar to Markdown. The GitHub page tags it with topics including diagrams-as-code, documentation, flowchart, javascript, mindmap and uml-diagrams, and lists the MIT license. Its docs folder includes syntax and diagram sections, so readers can check how diagram text is written before using the project.
Pricing is not clearly stated.
Key features
- Generates flowcharts and sequence diagrams from text
- Uses a text syntax similar to Markdown
- Docs include syntax and diagram sections
Mermaid at a glance
- Category
- Design & Creative › Charts & Data Visualization
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Details verified
- Oct 22, 2026 · Official source
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Charts & Data Visualization
Mermaid alternatives
Tools and sites you could use instead, ranked by how closely they match.
Flowchart Fun generates flowcharts and diagrams from text through a web application.
Open source
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Mermaid Live Editor creates charts and diagrams from text using Mermaid’s markdown-like syntax in a browser.
Kroki CLI converts diagram files through the Kroki service, inferring diagram type from the file extension by default.
Open source
24 alternatives
Kroki provides one API for generating diagrams from textual descriptions using libraries such as Mermaid, PlantUML, Graphviz, and D2.
PlantText provides an online editor for PlantUML code and generates class, sequence, activity, and state diagrams.
JDL-Studio draws UML diagrams from JDL syntax and provides instant feedback with customizable styling.
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