About
Draw.io is a powerful, free online diagramming application used by millions of individuals and teams worldwide. It provides a rich set of tools for creating a wide variety of diagrams including flowcharts, process diagrams, organizational charts, UML diagrams, entity-relationship (ER) diagrams, network diagrams, database schemas, BPMN workflows, and circuit diagrams — all from within a web browser. The tool is completely free to use and requires no account or installation. Users can work directly in the browser and save diagrams locally, to Google Drive, OneDrive, or other storage platforms. Draw.io also supports desktop apps for offline use across major operating systems. One of its standout features is broad compatibility: it can import .vsdx (Microsoft Visio), Gliffy, and Lucidchart files, allowing seamless migration from other diagramming tools. It also integrates deeply with popular platforms like Confluence, Jira, GitHub, and GitLab. Draw.io is ideal for software developers designing system architectures, database administrators modeling schemas, business analysts mapping processes, IT teams documenting infrastructure, and educators creating instructional diagrams. Its intuitive drag-and-drop interface combined with a vast shape library and real-time collaboration capabilities makes it one of the most versatile and accessible diagramming tools available. The open-source nature of the project also makes it attractive for organizations that require self-hosting.
Key Features
- Wide Diagram Type Support: Create flowcharts, UML, ER diagrams, BPMN, org charts, network diagrams, circuit diagrams, and more from a single tool.
- File Import Compatibility: Import .vsdx (Visio), Gliffy, and Lucidchart files to easily migrate existing diagrams into Draw.io.
- No Sign-Up Required: Start diagramming instantly in the browser with no account or installation needed. Save files locally or to cloud storage.
- Cloud & Offline Support: Save diagrams to Google Drive, OneDrive, or use the desktop app for offline diagramming on macOS, Windows, and Linux.
- Integrations & Extensibility: Integrates with Confluence, Jira, GitHub, GitLab, and more — with an open-source codebase available for self-hosting.
Use Cases
- Software developers designing system architecture diagrams and UML class or sequence diagrams.
- Database administrators and engineers creating entity-relationship (ER) diagrams and database schema visuals.
- Business analysts and project managers mapping out business processes with BPMN or flowcharts.
- IT teams documenting network infrastructure and topology diagrams.
- Educators and students creating instructional diagrams, org charts, and visual study aids.
Pros
- Completely Free: Draw.io is 100% free with no paywalls, feature limits, or mandatory account creation, making it accessible to everyone.
- Broad Diagram Support: Covers an extensive range of diagram types in one tool, removing the need for multiple specialized applications.
- Strong Import/Export Compatibility: Supports Visio, Gliffy, and Lucidchart imports, plus exports to PNG, SVG, PDF, and XML for maximum portability.
- Open Source & Self-Hostable: The open-source codebase allows organizations to self-host for full data privacy and control.
Cons
- Limited Real-Time Collaboration: Real-time multiplayer collaboration is not as seamless as dedicated tools like Figma or Miro without additional setup.
- UI Can Feel Dated: The interface, while functional, can feel less polished compared to newer diagramming tools with modern design systems.
- No Built-In Template Marketplace: While templates are available, there is no rich community-driven marketplace for pre-built diagram templates.
Frequently Asked Questions
Is Draw.io really free?
Yes, Draw.io is completely free to use with no feature restrictions or mandatory sign-up. There are paid integrations (e.g., for Confluence), but the core diagramming tool is free.
Can I use Draw.io offline?
Yes, Draw.io offers desktop applications for macOS, Windows, and Linux that work fully offline.
Can I import Visio files into Draw.io?
Yes, Draw.io supports importing .vsdx files from Microsoft Visio, as well as files from Gliffy and Lucidchart.
Where can I save my Draw.io diagrams?
You can save diagrams locally to your computer, or to cloud storage services like Google Drive and OneDrive. Diagrams are stored as XML files.
Is Draw.io open source?
Yes, Draw.io (also known as diagrams.net) is open source. The source code is available on GitHub, and it can be self-hosted by organizations.
