Make a favicon from text or emoji with multiple export formats
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
Create favicons from text or emoji
Choose from Google Fonts
Export as SVG, PNG, or ICO
Customize colors, size, and corner radius
Download all standard sizes in a zip package
SVG to PNG converter
PNG to Favicon converter
No account or signup required
Privacy-first with designs staying on device
Real-time preview rendering
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
100% free with no account or file uploads required
Privacy-first approach with all work done in browser
Instant export in multiple formats with zip download
Includes additional SVG-to-PNG and PNG-to-favicon converters
All fonts free for commercial use under open licenses
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
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Mermaid Viewer