PlantUML Visualizer - Chrome Web Store
Item logo image for PlantUML Visualizer

PlantUML Visualizer

6 ratings

Item media 1 screenshot
Item media 2 screenshot


A Chrome / Firefox extension for visualizing PlantUML descriptions.

This extension visualizes PlantUML descriptions as diagrams. Currently, this extension can visualize PlantUML descriptions in the following pages. - GitHub - File Viewer - - `!include` directive: - Issues: - Pull Requests - Added: - Deleted: - Changed: - `!include` directive: - Code blocks in README or something - - Any .pu / .puml / .plantuml / .wsd files - GitHub Raw Files (only Chrome) - - `!include` directive: - IMPORTANT NOTE: any extension on Firefox cannot work on GitHub Raw Files due to - Local Files - file:///C:/Users/XXX/Projects/plantuml-visualizer/puml-sample/class.pu - `!include` directive for local files will NOT be supported because of security problems - Please use another software for rich rendering of local files (e.g. the official PlantUML renderer: - IMPORTANT NOTE: if you use Google Chrome, you need to allow this extension to access file URLs The source code is hosted at

3.7 out of 56 ratings

Google doesn't verify reviews. Learn more about results and reviews.

Review's profile picture

Tawanda Douglas MuringaniFeb 8, 2023

Not working

Replier's profile picture

Kazunori SakamotoDeveloperMar 4, 2023

Sorry for the inconvenience. We've updated the exntesion (v2) fixing the bugs. Could you try it again?

Review's profile picture

Nguyễn Khắc QuânMar 10, 2021

very useful to see plainUML in github

Review's profile picture

Bob HSep 18, 2020

Loving it, it's worked where other solutions couldn't manage a very large drawing. Feature request? Could you make it interactive so that you can highlight a block and press one of the direction buttons to redraw with that directional mark-up. Positioning blocks on larger PlantUML drawings is probably the hardest thing there is about using PlantUML


  • Version
  • Updated
    May 21, 2023
  • Size
  • Languages
  • Developer
    WillBooster Inc.
  • Trader
    This developer has identified itself as a trader per the definition from the European Union.


The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes


Google apps