PlantUML Plugin

The PlantUML Plugin for Astah lets you import PlantUML diagrams into Astah and export Astah diagrams as PlantUML. Start diagramming in text, refine in Astah, share with non-Astah users, and use your models with AI tools via its text-based format.

Details

Compatible with

Astah Professional, Astah UML 12.0 and later

Latest Version

1.3.0 (Updated: September 4, 2026)

Developer

Change Vision, Inc.

Support

No technical support is provided.

Access on GitHub Download

Demo

Installation Steps

1. Click the [Download] button above to download the latest version of the plugin file (plantuml-plugin-x.x.x.jar).
2. Launch Astah, then drag and drop the downloaded .jar file into the Astah application window.
3. Restart Astah and go to [File] → [New] to create a new project (or open an existing .asta file).
4. Go to [View] → [Show/Hide Extra View].
   
5. In the bottom-right pane, open the [PlantUML view] tab. If you see sample PlantUML code alongside a diagram preview, the installation is complete.
   

Importing PlantUML Diagrams into Astah

1. Open the [PlantUML View] tab in Astah.
2. Paste your PlantUML code into the text editor. A preview of the diagram will render on the right.
3. Click the [▲toAstah] button to convert the code into an editable Astah diagram.

Exporting Astah Diagrams to PlantUML

1. Open the diagram you wish to export in Astah.
2. Click the [▼toPlant] button in the [PlantUML View] tab.
3. The generated PlantUML code will appear in the editor along with a diagram preview.

Learn More

For detailed technical documentation, refer to the PlantUML Plugin Readme:

• Supported diagram types
• Supported model elements
• System requirements and release notes

Download Older Versions

Version	Release Date	Compatibility	Download
1.1.0	March 3, 2026	Astah Professional & Astah UML 11.0 or later
1.0.0	August 1, 2025	Astah Professional & Astah UML 10.0 or later

Back to Plugin List