PlantUML Preview is a free add-on for Chrome that enhances functionality in Azure DevOps and GitHub by allowing users to visualize PlantUML diagrams directly within these platforms. It supports various diagram types including C4, UML, and ER, making it a versatile tool for developers who need to create and share diagrams in their workflow. This tool is particularly useful for those who work with .puml files, as it has been tested specifically for compatibility with Azure DevOps environments.

The add-on integrates seamlessly into the existing interfaces of Azure DevOps and GitHub, enabling a streamlined experience for users. By providing real-time previews of diagrams, it helps teams to improve collaboration and understanding of complex systems. Overall, PlantUML Preview is a powerful tool for anyone looking to incorporate visual representations of their code and architecture directly into their project management and version control systems.