Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports
Instant browser-based search engine for 134,701 open-source SVG and PNG icons across 28 libraries
Stage
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Founded
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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
Search 134,701 icons across 28 libraries simultaneously
Real-time color and stroke-width customization
Export to SVG, PNG, React JSX, Vue, CSS, HTML, and SVG sprites
Compare the same icon across multiple libraries
No login or API key required
100% client-side processing with no server communication
Works offline after first load
Support for 28 open-source icon families
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
Mermaid Viewer
IconStash