Create flowcharts, sequence diagrams, Gantt charts, and more using simple text syntax — then export everything to a clean PDF. No diagram tools or CLI setup required.
Mermaid diagrams render live in the editor. Here's a preview of the syntax — open in the editor to see the rendered diagram.
## System Architecture
```mermaid
graph TD
A[User] --> B[Web App]
B --> C{Auth?}
C -->|Yes| D[Dashboard]
C -->|No| E[Login Page]
D --> F[API Server]
F --> G[(Database)]
```
## Deployment Flow
```mermaid
sequenceDiagram
Dev->>GitHub: Push code
GitHub->>CI: Trigger build
CI->>Tests: Run tests
Tests-->>CI: Pass
CI->>Prod: Deploy
```Most Markdown-to-PDF converters silently drop Mermaid blocks or show raw syntax. MarkdownToPDF is one of the few browser-based tools that actually renders Mermaid diagrams in both the preview and the exported PDF.
No mermaid-cli, no Docker, no puppeteer. Just paste and render.
See your diagram update in real-time as you edit the syntax.
Diagrams are rendered as SVG and embedded cleanly in the PDF.
Decision trees, process flows, and workflow diagrams. Top-down, bottom-up, left-right, or right-left orientations.
```mermaid
graph TD
A[Start] --> B{Decision}
B -->|Yes| C[Action]
B -->|No| D[End]
```API interactions, protocol flows, and system communication patterns. Show actors, messages, and activation boxes.
```mermaid sequenceDiagram Client->>Server: Request Server-->>Client: Response ```
Project timelines, sprint planning, and milestone tracking. Export schedules as part of your documentation.
```mermaid gantt title Project Plan section Phase 1 Task A: a1, 2024-01-01, 30d ```
Object-oriented design, UML class hierarchies, and interface documentation for software architecture docs.
```mermaid classDiagram Animal <|-- Duck Animal: +String name Duck: +swim() ```
Database schema visualization, entity relationships, and data modeling for technical specifications.
```mermaid
erDiagram
USER ||--o{ ORDER : places
ORDER ||--|{ ITEM : contains
```Simple data distribution charts for reports, surveys, and quick data visualization.
```mermaid pie title Languages "JS" : 45 "Python" : 30 "Go" : 25 ```
Paste Mermaid syntax into the editor and see your diagrams rendered live.
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