Code2Visual
Editor
Preview
What is a Code-to-Visual Dynamic Diagrammer?
The Code-to-Visual Dynamic Diagrammer is a free, privacy-first tool that instantly converts Mermaid syntax into beautiful, interactive diagrams — entirely inside your browser. No uploads, no servers, no API keys, no tracking.
Who Is This For?
Software engineers, database designers, system architects, technical writers, DevOps engineers, and students who want to create professional, version-controlled documentation using code instead of manually dragging shapes.
Why Use Mermaid for Diagramming?
Mermaid is a JavaScript-based diagramming tool that renders Markdown-inspired text definitions to create and modify diagrams dynamically. Unlike drag-and-drop tools, Mermaid uses a lightweight markup language that lets you version control diagrams, embed them in documentation, and generate them programmatically.
Key Benefits
- Version Control Friendly — Text-based diagrams integrate naturally with Git.
- Documentation Native — Supported by GitHub, GitLab, and Notion.
- Privacy First — All processing happens in your browser.
- Free Forever — Unlimited usage, no account required.
- Multiple Export — SVG, PNG, PDF at up to 8x resolution.
Supported Diagram Types
Convert code into a wide array of diagram models. Instantly render and style any of the following structures:
Flowcharts
Create flowcharts with nodes, subgraphs, and link labels. Perfect for process flows, logic validation, and decision trees.
Sequence Diagrams
Model interactions and message sequencing between participants over time. Ideal for API call flows and authentication sequences.
Class Diagrams
Represent object-oriented class hierarchies, inheritance relationships, attributes, and methods.
Entity Relationship (ERD)
Define database schemas visually with entities, attributes, key types, and cardinality relationships.
State Diagrams
Model finite state machines for system states, UI state transitions, protocols, and transaction processing.
User Journey
Map user experiences, tasks, satisfaction scores, and action steps visually to improve UI/UX design.
Git Graphs
Visualize branching strategies, commits, merges, and repository workflows using declarative syntax.
Frequently Asked Questions
Everything you need to know about using AeroPDF — from privacy and performance to supported devices.
Mermaid is a JavaScript-based diagramming tool that converts Markdown-inspired text into dynamic, scalable diagrams.
Yes, completely free forever. No paid plans, no account required, no API keys.
No. Everything runs entirely in your browser. Your code never leaves your machine.
Yes. After the initial page load, the tool works completely offline.
Flowcharts, sequence diagrams, class diagrams, ER diagrams, state diagrams, journey diagrams, git graphs, and mind maps.
Use the Export dropdown. You can export as SVG, PNG, or PDF at up to 8x resolution, or copy to clipboard.
Chrome, Edge, Firefox, Safari, Opera, and their mobile versions.
Click the Import button to select a file, or drag and drop files onto the page.
Yes. The tool features premium dark mode with glassmorphism design and multiple Mermaid themes.
Yes. Use Ctrl+Z to undo and Ctrl+Y to redo.
Click the Validate button in the toolbar. Validation also happens automatically as you type.
Ctrl+Z undo, Ctrl+Y redo, Ctrl+S save, Ctrl+Shift+C copy SVG, Ctrl+Enter render.
Yes. Use mouse wheel to zoom, drag to pan, or use the preview toolbar controls.
Yes. Your code is automatically saved to local storage as you type.
Diagrams up to 100,000 characters are supported.
Click the star icon on any template in the template picker.
Yes. Free for any purpose including commercial projects.
This code-to-visual approach is ideal for developers who want version-controlled, embeddable diagrams.
No. Create unlimited diagrams, completely free.
Yes. The editor is powered by Monaco (VS Code's engine) with Mermaid syntax highlighting, auto-complete, bracket matching, code folding, and more.