Diagram Maker - Free Online | FunToolX
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Diagram Maker
Write Mermaid syntax to render flowcharts, sequence diagrams, UML, ER, topology and swimlane diagrams live.
About this tool
Diagram Maker is a free online tool. Write Mermaid syntax and render flowcharts, sequence diagrams, UML, ER, topology and swimlane diagrams live.
Select the chart type (flow chart, mind map, organization chart, sequence chart, ER chart, etc.) and add nodes and connectors to the canvas. Support drag-and-drop adjustment, automatic layout, style customization (color, font, shape). You can import and export JSON data, or export it to PNG, SVG, or PDF formats.
Chart rendering uses SVG or Canvas, and nodes and connecting lines are separate DOM elements or graphical objects. Automatic layout algorithms (such as force-oriented layout, hierarchical layout) can automatically calculate positions based on node relationships. Support collaborative editing (some tools).
Suitable for quickly drawing flow charts, architecture charts, mind maps, etc. Lighter than Visio or Draw.io, suitable for simple needs. It is also used for sketches in documents.
Online charting tool to create flow charts, mind maps, organization charts, UML diagrams, etc., and support drag-and-drop editing and export.