Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports
Transform your writing into cursive instantly with 28 real fonts, exportable as PNG or SVG
Stage
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Startup
Founded
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2026
Based in
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Pricing model
Freemium
Free
Pricing
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
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Key features
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
28 real cursive fonts in 4 styles
Export transparent PNG and scalable SVG
Real-time font rendering in browser
Customize font size and text color
No registration or sign-up required
Client-side processing with no data upload
Scenario-based generators for signatures, tattoos, and names
Support for symbols and special characters
What makes it different
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
28 real font files instead of Unicode symbol substitution
Completely private with no text uploaded to servers
High-resolution exports ready for professional design software
Rigorous open-source font licensing verification
Fast browser-native rendering with no software installation
Mermaid Viewer
Cursive Generator