Creates diagrams and charts from text using Mermaid.js syntax.
Product memo
Mermaid Online gives developers and documentation teams a web-based editor for generating diagrams from Mermaid.js syntax. It offers real-time rendering, multiple export formats, and a template library, simplifying visual communication for technical documentation and workflow visualization. An AI diagram generation feature helps users quickly draft new visuals.
For who
Developers and documentation teams
Solves what
Creating diagrams and charts from text using Mermaid.js syntax.
- Live preview rendering
- Multiple diagram types
- Export to PNG/SVG
In their own words
Create Beautiful Mermaid Online Diagrams from Text
Transform your ideas into visual diagrams using simple Mermaid syntax. Perfect for documentation, system design, and workflow visualization.
Transform ideas into visual diagrams using simple Mermaid syntax.
Commercial cues
Model
subscription
Free tier
Yes
Trial
Available
Pricing Strategy
- • The Basic Package offers an affordable entry point for individual users.
- • Free tier lowers testing friction.
Operator context
Founded
Nov 2025
HQ
Hong Kong
Platform
Web app
Audience
Developers
Payments
Stripe
Public footprint
Tech stack
Builder Strategy
- Strategy Type
- Niche Specialist
- Stage
- Profitable Stable
- Effort
- Solo Buildable
About Mermaid Online Expand
Mermaid Online provides a focused product for developers and documentation teams who need to create diagrams and charts quickly from text. Using the popular Mermaid.js syntax, the editor offers a live preview, multiple export options like PNG and SVG, and a template library.
Its AI diagram generation feature helps users draft visuals efficiently. The product's positioning around a specific, widely adopted syntax makes it a focused tool for technical documentation and workflow visualization, serving users who prefer code-based diagramming over traditional drag-and-drop interfaces.