The best way to write UML anywhere

I’m to introduce the Google Chrome extension which gets along with PlantUML: “UML anywhere”.
百聞は一見にしかず。
See the demo below.

Here is the article by the author (in Japanese):
Qiita（とかブログとか）にPlantUMLで書いたUML図を貼れるようにChrome拡張機能を作った - Qiita