DiagramPreview is an all-in-one online workspace for developers to preview, generate, and convert technical diagrams in formats like Mermaid, PlantUML, Markdown, Graphviz, D2, draw.io, mind maps, JSON, YAML, and more. It simplifies visualizing system architectures, debugging APIs, and documenting workflows without complex toolchains.
Key benefits include:
- AI-Powered Diagram Generation: Create Mermaid, PlantUML, and draw.io diagrams from natural language prompts or text descriptions using AI assistance.
- Multi-Format Preview & Conversion: Preview and convert across Mermaid, PlantUML, Markdown, Graphviz, D2, draw.io, mind maps, JSON, YAML, and developer-specific formats (e.g., OpenAPI, SQL, Protobuf).
- Workflow Optimization: Streamline technical documentation with tools for API debugging (OpenAPI/Postman/HAR to sequence diagrams), schema visualization (JSON/GraphQL/SQL to ER diagrams), and CI/CD pipeline generation.
- Local-First Rendering: Most tools render in the browser locally, ensuring fast drafts and secure processing of sensitive data without server uploads.
- Export & Collaboration: Export diagrams as SVG, PNG, or PDF, and share via editable draw.io/XML formats for team collaboration.
Perfect for developers, engineers, product managers, and technical writers needing to visualize, document, and share technical diagrams, architecture, and system workflows efficiently.
