Express system modules, component relationships and information hierarchy with flexible layouts, suitable for architecture design and solution documentation.
A block diagram is an abstract chart used to show system modules, components and structural relationships. It describes system composition and information flow through rectangular modules and connections. Block diagrams are widely used in system design, hardware architecture, software module planning and technical solution documentation.
Break a complex system into multiple independent modules to show the overall structure and composition.
Show the hierarchical relationships between product function modules, helping plan the product structure.
Used to express the core stages and module relationships in business processes.
Show how modules are connected in hardware devices, electronic systems or industrial systems.
You can generate block diagrams by writing Mermaid code, AI generation, image recognition, code summary and more. You can also draw block diagrams using our built-in block diagram templates.
After entering Mermaid syntax, block diagrams are generated and previewed in real time, with support for custom block diagram styles and themes.
You can download block diagrams and save them locally. We support exporting block diagrams to PNG, PDF, SVG, JPG, Markdown and other formats, or clicking the “Share” button to share the link with others.
If you are not satisfied with the result, click the “Visual editing” button to edit the block diagram again in the ProcessOn editor.
A Mermaid block diagram is a graphic used to show modules, components and structural relationships, helping users express system composition and information hierarchy.
Mermaid block diagrams are suitable for system module division, product function structures, page layout planning, technical solution documentation and more.
Mermaid block diagrams emphasize the organizational structure between modules, while Mermaid architecture diagrams are usually used to describe the technical composition and interaction relationships of a complete system.
Yes. Mermaid block diagrams define structure through code, making them ideal for embedding in Markdown technical documents, project descriptions and design documents.
Define nodes and connection relationships with Mermaid block diagram syntax to quickly generate a structured block diagram for displaying complex information.