Build flowcharts visually with drag-and-drop shapes, colors, and grouping — then export as Mermaid code for GitHub, GitLab, Notion, or any Markdown file. No sign-up, no installs.
The flowchart builder generates Mermaid code like this. Paste it into any Markdown file to render the diagram.
## User Registration Flow
```mermaid
flowchart TD
node_1("Start")
node_2["Show Registration Form"]
node_3{"Valid Input?"}
node_4["Create Account"]
node_5["Show Error Message"]
node_6[("Save to Database")]
node_7("Done")
node_1 --> node_2
node_2 --> node_3
node_3 -->|"Yes"| node_4
node_3 -->|"No"| node_5
node_5 --> node_2
node_4 --> node_6
node_6 --> node_7
style node_1 fill:#bbf7d0,stroke:#22c55e,color:#1a1a1a
style node_7 fill:#bbf7d0,stroke:#22c55e,color:#1a1a1a
style node_3 fill:#fef08a,stroke:#eab308,color:#1a1a1a
style node_5 fill:#fecaca,stroke:#ef4444,color:#1a1a1a
```
Colors, shapes, and edge labels are all generated automatically by the visual builder.Colors, shapes, and edge labels are all generated automatically by the visual builder.
Professional diagramming capabilities — completely free, running entirely in your browser.
Place nodes, drag to reposition, and zoom/pan on an infinite canvas. Just like Lucidchart or draw.io.
Color-code your diagram nodes. Colors are exported as Mermaid style directives automatically.
Full history stack with Ctrl+Z and Ctrl+Y. Never lose work — go back and forth freely.
Drag corner handles to resize any shape. Adjust node dimensions to fit your content.
Select multiple nodes and group them (Ctrl+G). Move groups as a unit, ungroup with Ctrl+Shift+G.
Toggle 16px grid alignment to keep your diagram neat and perfectly aligned.
One-click copy of Mermaid code wrapped in a ```mermaid block, ready for any Markdown file.
Download your diagram as a vector SVG or high-resolution PNG image for presentations.
Everything runs in your browser. No server, no uploads, no data collection.
Every standard flowchart shape, mapped directly to Mermaid syntax.
General process or action step
A["Process Step"]Terminal — start or end of a flow
A("Start/End")Decision point — yes/no branching
A{"Decision?"}Data input or output operation
A[/"Input/Output"/]On-page connector or reference
A(("Connector"))Database or data storage
A[("Database")]Predefined process or sub-routine
A[["Subroutine"]]Click shapes from the palette to add them to the canvas. Drag to position.
Drag handles between nodes to create edges. Add labels, colors, and groups.
Click 'Copy as Markdown' to get the Mermaid code. Paste into any Markdown file.
Create a visual flowchart and export Mermaid code in seconds — free, private, no sign-up.
Start ConvertingBuilt by Yogendra Singh