Use PlantUML in diagrams.net and draw.io for Confluence Cloud
With PlantUML in diagrams.net and draw.io for Confluence Cloud, you can quickly draw UML diagrams from a text description. When you input your PlantUML text, the diagram editor will automatically layout and arrange the diagram for you, based on your description and the style of output you select. It supports many different types of UML diagrams, as well as mindmaps, tree diagrams, flowcharts, network diagrams, Gantt charts, ER diagrams and more.