What is a Draw.io file?

Draw.io (.drawio, .dio) is the native XML format of diagrams.net (formerly Draw.io), the popular open-source diagramming application. Files store shapes, connectors, styles and page layout as structured XML, and can be opened by diagrams.net online, desktop or VS Code extension.

Are my Draw.io files uploaded?

No. Diagrams you open from your device stay on your device and are rendered locally. Only the public sample diagram is requested from the server.

No, this is a viewer. It renders the diagram for inspection without uploading. For editing, use the diagrams.net web app or desktop application.

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Draw.io Viewer

Free online Draw.io viewer. Open and preview Draw.io diagrams (.drawio, .dio) directly in your browser — no upload, no software.

.drawio.dio

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About this file format

Draw.io (.drawio, .dio), powered by diagrams.net (formerly Draw.io), is the leading open-source diagramming format. The XML-based format stores shapes, connectors, styles and multi-page layouts, and is used for flowcharts, network diagrams, UML, BPMN, floor plans and mind maps. diagrams.net is free, supports import/export to Visio (.vsdx), and integrates with Google Drive, OneDrive and GitHub.

Draw.io Viewer

About this file format

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Draw.io Viewer

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