Best Practices

Start Small

Begin with a simple diagram:

flowchart LR
    A --> B

Then add complexity one piece at a time.

Keep Labels Short

Short labels generally make diagrams easier to read and can improve layout performance.

Separate Large Systems

Instead of one enormous diagram, create separate diagrams for:

• high-level architecture
• frontend
• backend
• database
• deployment
• detailed workflows

Use the Diagram Type That Matches the Problem

Use a flowchart for process logic, a sequence diagram for chronological communication, a state diagram for lifecycle transitions, an ER diagram for database relationships, and a Gantt chart for project timing.

Version-Control Mermaid Source

Because Mermaid diagrams are text definitions, keep the source with the documentation or project repository.

Validate Before Publishing

Check:

• syntax
• reserved words
• quotes and brackets
• Mermaid version compatibility
• host-platform support
• security settings
• large-diagram performance