Diagram Generator
Describe what you want to show and generate a flowchart, sequence diagram, mind map, timeline, Gantt chart or ER diagram. Edit the result and export SVG or PNG.
Describe your diagram
Describe the steps, people, or relationships in plain language. Maximum 2,000 characters.
Describe what you need, then generate a diagram.
Edit Mermaid text
Edit the generated Mermaid syntax, then update the preview. Maximum 12,000 characters.
Your description is sent to OpenAI to draft Mermaid text. The resulting diagram renders in your browser. Review its content before using or downloading it.
Continue your research in AnswerThis
Create the visual here, then use AnswerThis to find and work with the research behind it.
How to use Diagram Generator
- Choose a diagram type and describe what it should show.
- Generate a preview and edit the Mermaid text if needed.
- Review every label and connection, then download SVG, PNG or Mermaid text.
What to check
- Confirm the direction and meaning of every arrow.
- Keep labels short enough to remain readable.
- Use SVG for scalable publication artwork and keep Mermaid text for later editing.
Supported diagram types
Create flowcharts, sequence diagrams, mind maps, timelines, Gantt charts and entity relationship diagrams from a plain language description. The generated Mermaid syntax remains editable.
Privacy and limitations
Your description is sent to OpenAI to draft Mermaid text. Rendering happens in your browser. AI can omit or invent steps and relationships, so check the result before using it.
Frequently asked questions
Is this diagram generator free?
You can create diagrams without logging in. AI generation is rate limited; rendering and downloads happen in your browser.
Can I edit the diagram?
Edit the Mermaid text and generate again. Download the .mmd file to retain the editable source.
Does this use AI?
Yes. OpenAI turns your description into Mermaid syntax, which is then rendered in your browser.