Mermaid Diagram Editor — AI Generation, 12 Templates & Export
Describe a diagram in plain English and let AI create it, or write Mermaid syntax directly. 12 templates, AI syntax fix, SVG/PNG export, and shareable URLs. 100% client-side rendering.
Keywords: mermaid editor, mermaid diagram, flowchart maker, sequence diagram generator, class diagram, er diagram, gantt chart, mermaid live, diagram editor, uml diagram, ai diagram generator, mermaid ai, git graph, timeline diagram, diagram from text
Frequently Asked Questions
What is Mermaid?
Mermaid is an open-source library that renders diagrams from simple text definitions. It's used in GitHub, GitLab, Notion, and other documentation tools.
What diagram types are supported?
12 types: flowcharts, sequence diagrams, class diagrams, state diagrams, ER diagrams, Gantt charts, pie charts, mind maps, git graphs, user journeys, quadrant charts, and timelines.
How does AI diagram generation work?
Click 'AI Generate', describe your diagram in plain English (e.g. 'a login flow with OAuth'), and AI creates the Mermaid code for you. You can also pick a specific diagram type.
Can AI fix my broken Mermaid code?
Yes. When your code has a syntax error, an 'AI Fix' button appears. Click it and AI will repair the syntax automatically.
Can I share my diagrams?
Yes. Click the share button to copy a URL that encodes your diagram. Anyone with the link sees exactly what you see.
Can I export my diagrams?
Yes, export as SVG (vector, perfect for documents) or PNG (2x resolution, great for presentations).
Is my data private?
Diagram rendering is 100% client-side. AI features send your code to our server for processing, but nothing is stored permanently.
Can I use Mermaid syntax from GitHub?
Yes, our editor uses the same Mermaid library used by GitHub, GitLab, and other platforms. Your syntax is fully compatible.