Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports
Agentic node editor for live visual effects on macOS
Stage
Not given
Startup
Founded
Not given
2024
Based in
Not given
FR
Pricing model
Freemium
Open source
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
Not given
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
Real-time code generation with Swift and Metal
Editable source code for every node
VJing and live audio visuals support
Projection mapping with corner-pin and grid warp
Hardware integration with cameras and MIDI
Browser export as single HTML file
Support for multiple AI models
Deterministic agent workflows
Video recording with sound
Custom node controls and UI cards
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
Agents build code as connected nodes you own and can edit
Use your own existing AI subscription without reselling tokens
Deterministic reproducible agent workflows
No iteration friction from idea to working effect
Work on commercial projects without additional licensing
Mermaid Viewer
SubjectiveZero