diagramo

Diagramo is an open-source diagram editor designed to run in a web browser. It provides a lightweight, client-side environment for creating diagrams such as flowcharts, process diagrams, and simple UML diagrams. The application is typically built with JavaScript and renders diagrams using HTML5 Canvas, with SVG support in some builds, allowing users to work offline in a local browser instance or to be deployed on a web server for saving and sharing diagrams.

The editor features a drag-and-drop interface with a palette of shapes, connectors, and text labels. Shapes are resizable and stylable, and connectors can be snapped to attachment points. Users benefit from alignment guides, a grid, grouping of objects, and basic templates. The project emphasizes portability and interoperability with standard web technologies, making it easy to rearrange, style, and export diagrams.

Saving and export: diagrams can be saved in Diagramo’s native data format and exported to common image formats such as PNG and SVG; depending on deployment, additional export or embedding options may be available. As an open-source project, Diagramo’s code is available for modification, and the tool can be hosted locally or integrated into websites or content management systems. Diagramo is used by individuals, educators, and small teams seeking a browser-based diagramming solution without vendor lock-in.