MermaidViewer
MermaidViewer is an online tool to create, edit, and share Mermaid diagrams with live previews, AI-assisted code, and seamless export options.
About
MermaidViewer is the ultimate online tool for creating, editing, and sharing Mermaid diagrams. Instantly see live previews as you type, use AI-assisted code generation to speed up diagram creation, and export your work in SVG, PNG, or Markdown with ease. Collaborate in real-time with team members or work solo — no installation required. Perfect for flowcharts, sequence diagrams, Gantt charts, and other technical visualizations, MermaidViewer.com combines speed, accuracy, and simplicity in one intuitive platform. Ideal for developers, product managers, and teams who want professional-quality diagrams quickly and efficiently.
Key Features
Instant Live Preview
Watch your diagrams come to life as you type, no waiting, no hassle.
Smart AI Assistance
Turn simple text into fully functional Mermaid diagrams with GPT-4 magic.
Flexible Exports
Save your work in SVG, PNG, PDF, or Markdown, with themes and DPI customization.
Seamless Team Collaboration
Share and co-edit diagrams in real-time, boosting productivity.
Enterprise-Ready & Secure
Deploy privately with Docker and manage access with role-based controls.
How to Use MermaidViewer
(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
Use Cases
Frequently Asked Questions
Q: How do I save my diagrams?
A: Diagrams can be saved in multiple ways: 1) Export as SVG/PNG files 2) Copy share link 3) Save to browser local storage. Our editor automatically saves your latest changes so you never lose your work.
Q: How do I share diagrams with my team?
A: Click the "Share" button in the editor to generate a unique link. Your team members can view and edit the diagram through this link. We support real-time collaboration, so all changes are synced instantly.
Q: What types of diagrams are supported?
A: We support all Mermaid.js diagram types including: flowcharts, sequence diagrams, class diagrams, state diagrams, entity relationship diagrams, user journey diagrams, Gantt charts, pie charts, requirement diagrams, Git graphs, C4 diagrams, mind maps, and timelines.
Q: How do I export high-quality diagrams?
A: We offer multiple export options: 1) SVG format for scalable diagrams 2) PNG format for direct use 3) High-resolution export options to ensure your diagrams look crisp in any context. You can also customize export settings like size and background color.