Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports
Stage
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Founded
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Based in
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Pricing model
Free
Freemium
Pricing
Not given
Free: unlimited editor and preview, 3 saved diagrams, 5 AI uses total, PNG export 1× with watermark. Starter: $6.99/month or $69.90/year; 30 saved diagrams, 500 AI conversations per month, PNG export up to 4× without watermark. Pro: $11.99/month or $119.90/year; unlimited diagrams, unlimited AI, PNG
Key features
Multiple graph types: line, pie, donut, bar, horizontal bar, histogram, scatter plot, radar chart
AI-powered data cleaning
Real-time graph updates
Fully editable graphs with customizable themes, labels, and legends
Automatic AI insights explaining trends and patterns
Export as PNG or JPEG
Shareable graph links
No signup or account required
Privacy-focused with browser-based processing
Live preview of Mermaid code as you type
AI diagram generator, editor and syntax fixer
PNG export on every plan; JPG, SVG and PDF on Pro
All 22+ Mermaid diagram types supported
Share diagrams via public links and embeds
Save diagrams to cloud with folders and version history
Keyboard shortcuts and autocomplete
Mobile-responsive editor with pan and pinch-zoom
What makes it different
10x faster graph creation in seconds instead of minutes
Zero learning curve with instant, no-training interface
AI understands data and suggests best visualization type
No signup required, start creating immediately
Professional publication-ready results automatically
No account or sign-up required to start editing diagrams
Affordable pricing: Starter at $6.99/month, Pro at $11.99/month
Diagrams render in your browser; nothing stored unless you choose to save
Fast editor with instant rendering and clear error messages
Graph Maker AI
Mermaid Viewer