A Notepad++ plugin to generate view and export PlantUML diagrams.

• Official and full PlantUML syntax
• Dockable panel to show the generated PlantUML diagrams
• Zoomable diagrams
• PNG export of diagrams
• Dark mode support

You can find latest and all other changes in the changelog.

Download a release version and copy the folder PantUmlViewer with its content to the plugins subfolder of your Notepad++ installation directory.

If you have the Plugin Manager installed you can search for PlantUML Viewer and install it.

This plugin requires at least

• Notepad++ 32-bit or 64-bit
• Windows
• .NET Framework 4.6.1 or above
• Java

PlantUML Viewer can be opened

• by clicking the toolbar icon
• via the Plugins submenu

By clicking the Refresh button the diagram gets generated out of the current opened document. The file extension doesn't matter. The diagram can be moved by dragging and zoomed by scrolling. The currently showed diagram can be exported as PNG image by clicking the Export button.

Make sure JAVA_PATH is set in your system or set the right path to your Java installation in the plugins options.

You may also want use this plugin in combination with PlantUML_Notepad-_UDL, which enables the PlantUML language syntax for Notepad++.

PlantUML Viewer is released under the MIT License.

This Notepad++ plugin integrates the sources of multiple other libraries, because of issues with the library merging process. Credits and thanks to all the developers working on these great projects:

• The plugin is based on the Notepad++ PluginPack.net by kbilsted provided under the Apache-2.0 license.
• The plugin uses the PlantUML .Net wrapper PlantUml.Net by KevReed provided under the MIT License.
• The plugin uses the ImageBox Control by Cyotek provided under the MIT License.
• The plugin release includes the PlantUML binaries of PlantUML which are free to use and released under the GNU General Public License.

Resonable feedback, issues and contributions are always very welcome. Feel free to bring in your points!

This source and the whole package comes without warranty. It may or may not harm your computer or cell phone. Please use with care. Any damage cannot be related back to the author. The source has been tested on a virtual environment and scanned for viruses and has passed all tests.

I've created this software in my leasure time since I found no comparable solution to preview PlantUML diagrams seamlessly in Notepad++. This software (with all its bugs) is not aiming to be an enterprise solution. It surely will not fulfill the needs of everybody. But it maybe is a nice little helper for some of you. I am always open for your reasonable feedback, issues and contributions. Feel free to contact me and have fun with it.