Text to Flowchart
Type Mermaid syntax and instantly generate flowcharts and diagrams. No server — 100% local processing.
Syntax Error
About
Text to Flowchart is a free browser tool that automatically generates flowcharts, sequence diagrams, and more from simple text using Mermaid syntax.
All rendering is performed locally using Mermaid.js — no data is ever sent to an external server, making it safe for confidential workflows and system designs.
Export your diagrams as SVG (vector) or PNG (raster) instantly. No app installation needed — just open in your browser and start diagramming.
How to Use
Enter your code
Type Mermaid syntax in the left editor. A sample diagram is pre-filled to help you get started quickly.
See it live
The preview on the right updates in real time. If there is a syntax error, a helpful error message is displayed.
Save as SVG or PNG
Click "Save SVG" or "Save PNG" to download your diagram directly to your device.
Glossary
- Mermaid.js
- A JavaScript library that generates diagrams from text-based syntax. Officially supported in GitHub Markdown.
- Flowchart
- A diagram that represents a process or workflow. Created in Mermaid with
graph TD(top-down) orgraph LR(left-right). - SVG (Scalable Vector Graphics)
- A resolution-independent vector image format. SVGs can be scaled to any size without quality loss, making them ideal for presentations and print.
- Node
- Each element in a diagram (rectangle, circle, diamond, etc.). Defined in Mermaid as
A[Label]. - Edge
- The arrow or line connecting nodes. Represented as
-->(arrow) or---(line) in Mermaid. - Sequence Diagram
- A diagram showing interactions between actors over time. Created with
sequenceDiagramin Mermaid.
FAQ
- Q.Can I use non-English text in nodes?
- Yes. Mermaid.js supports Unicode, so you can use any language including Japanese, Arabic, or Cyrillic inside your nodes.
- Q.What if the diagram overflows the preview area?
- The preview area supports horizontal and vertical scrolling. You can also try changing the layout direction from "graph TD" (top-down) to "graph LR" (left-right) to fit your diagram better.
- Q.Is my diagram sent to a server?
- No. All rendering is handled locally in your browser using Mermaid.js. Your diagram content is never transmitted to any external server.
- Q.What is the difference between SVG and PNG?
- SVG is a vector format that scales without quality loss — ideal for presentations, print, or embedding in web pages. PNG is a raster format, convenient when you need to paste the image directly.
- Q.Can I create diagrams other than flowcharts?
- Yes. Mermaid.js supports sequence diagrams (sequenceDiagram), class diagrams (classDiagram), Gantt charts (gantt), and more.
- Q.Can I save my code and come back later?
- The current version does not persist code between sessions. To edit later, copy your Mermaid code from the text area and save it locally.
Use Cases
System design documents
Document API call flows or database schemas using Mermaid and embed them directly in technical docs.
Meeting notes & workflows
Quickly visualize workflows or approval flows from meetings and share them with your team.
Presentation slides
When drawing diagrams in PowerPoint is too slow, create them in Mermaid, export as PNG, and paste into slides.
Education & learning materials
Visualize algorithm steps or timelines as flowcharts to create easier-to-understand study materials.
Mermaid Syntax
Basic Flowchart (graph)
graph TD
A[Start] --> B{Condition}
B -->|Yes| C[Process A]
B -->|No| D[Process B]
C --> E[End]
D --> E Sequence Diagram (sequenceDiagram)
sequenceDiagram User->>Server: Login request Server->>DB: Verify credentials DB-->>Server: Return result Server-->>User: Login success
Node shape reference
A[Text] — RectangleB(Text) — RoundedC{Text} — DiamondD((Text)) — CircleE>Text] — AsymmetricF[(DB)] — DatabaseSend Feedback
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