mermaid

Generate diagram from file

$ mmdc -i [input.mmd] -o [output.png]

$ mmdc -i [input.mmd] -o [output.svg]

$ mmdc -i [input.mmd] -o [output.pdf]

$ mmdc -i [input.mmd] -o [output.png] -t [dark]

$ mmdc -i [input.mmd] -o [output.png] -b [white]

$ echo "graph LR; A-->B" | mmdc -o [diagram.png]

mmdc [options]

mmdc (Mermaid CLI) renders Mermaid diagrams from text definitions to images. Mermaid is a diagramming language for flowcharts, sequence diagrams, class diagrams, and more.
The tool enables automated diagram generation in documentation pipelines and scripts.

-i file

Input mermaid file.

Output file.

Theme (default, forest, dark, neutral).

Background color.

Config JSON file.

Width in pixels.

Height in pixels.

Puppeteer config file.

Scale factor.

graph/flowchart: Flow diagrams
sequenceDiagram: Sequence diagrams
classDiagram: Class diagrams
stateDiagram: State machines
gantt: Gantt charts
pie: Pie charts

Requires Puppeteer/Chromium. Complex diagrams may need tuning. PDF quality varies. Large diagrams can be slow.

Mermaid was created by Knut Sveidqvist around 2014 to provide a simple text-based diagramming language. The CLI tool enables command-line rendering, complementing web-based rendering in browsers and documentation tools.

graphviz(1), plantuml(1), ditaa(1), drawio(1)