Visualize Your Ideas with Mermaid Viewer
The simplest way to create and share Mermaid diagrams directly in your browser. No more struggling with local editors – preview diagrams instantly in your browser.
🛠 Core Features
Live Preview
Visualize changes as you type, no "Render" button needed
AI-Assisted Coding
"Generate with GPT-4" button converts text descriptions to Mermaid code
Smart Export
Save as SVG/PNG/Markdown with custom DPI and dark/light themes
Enterprise Integration
Docker private deployment + role-based access control
Smart Debugging
Syntax error highlighting and auto-correction suggestions
Real-time Collaboration
Share editor links with team members to co-edit diagrams
How to Use
Create professional diagrams in 3 easy steps
Enter Mermaid Code
Input diagram code in Mermaid viewer
Real-time Preview
Instantly see your Mermaid diagram
Export as SVG/PNG/PDF
Download diagram in multiple formats
Why Choose Mermaid Viewer?
The most intuitive and powerful diagram editor for developers
Real-time Preview
See diagram changes as you type
No Signup
Start creating diagrams instantly, no registration needed
Privacy First
Data stays in your browser, we don't store anything
Choose Your Plan
Whether for personal or professional use, we have the right plan for you
Free
Perfect for getting started
- 3 diagrams
- 5 AI conversations per day
- Low-res PNG export (with watermark)
- Basic sharing
- No version history
Starter
Most popular choice for individuals
- 30 diagrams
- 500 AI conversations per month
- High-res PNG export (no watermark)
- Unlimited sharing
- 30 version history
Pro
For professional developers
- Unlimited diagrams
- Unlimited AI conversations
- All formats (PNG/JPG/PDF/SVG)
- Advanced sharing & statistics
- 100 version history
- Personal notes & annotations
- Priority support
“MermaidViewer reduced our architecture design time from days to hours. The VS Code plugin is genius!”
Aiden Chen
Lead DevOps @TechCorp
Frequently Asked Questions
Ready to start with Mermaid diagrams?
Completely free, no registration required, start now