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Flowchart & Diagram Maker

Create diagrams using Mermaid syntax. Supports flowcharts, sequence diagrams, Gantt, ER, and more.

Presets
Mermaid Code
Click โ€œRender Diagramโ€ to see your diagram.

About this tool

Create flowcharts, process diagrams, and decision trees visually in your browser. Drag and drop nodes, connect them with arrows, label each step, and apply colour coding. Export as PNG, SVG, or Mermaid syntax. Ideal for documenting processes, onboarding flows, software logic, and business workflows without installing Visio or Lucidchart.

How to Create a Flowchart Online

  1. 1Drag a shape from the sidebar onto the canvas to add a node.
  2. 2Double-click a node to add a label.
  3. 3Hover over a node edge and drag to connect it to another node.
  4. 4Label the arrow to indicate the condition (Yes/No for decisions).
  5. 5Export as SVG or PNG for presentations, or Mermaid for docs.

Frequently Asked Questions

What shapes are available for flowcharts?+
Standard flowchart shapes: rectangle (process), diamond (decision), oval/rounded (start/end terminal), parallelogram (input/output), cylinder (database), document shape, and cloud. Each has a specific meaning in flowchart notation.
What does each flowchart shape mean?+
Rectangle: a process step or action. Diamond: a yes/no decision. Oval: start or end point. Parallelogram: data input or output. Arrow: flow direction. Circle: connector or reference to another page.
Can I export to Mermaid or draw.io?+
Yes. Export as Mermaid syntax to embed flowcharts in Markdown documentation (GitHub README, Notion, Confluence). Export as draw.io XML to import into drawio.com for further editing.
How do I create a swimlane diagram?+
Add horizontal or vertical lane containers and place process nodes inside them. Swimlanes separate responsibilities - e.g. Customer lane, System lane, Finance lane - showing which role performs each step.
Looking for a deeper guide on this topic? Browse the Searchlight blog.
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