Question 1

How is it different from Mermaid?

Accepted Answer

It is intended for PlantUML syntax and UML-focused diagram authoring. You can switch between different notation tools by document.

Question 2

Can I save the result as an image right away?

Accepted Answer

SVG and PNG actions depend on the preview engine connection. When it is not connected yet, the preview panel shows an error.

Question 3

What diagram types can I draw?

Accepted Answer

Sequence diagrams, class diagrams, state diagrams, use-case diagrams, Gantt charts, and other major PlantUML types are supported.

Question 4

Where can I look up the syntax?

Accepted Answer

The official PlantUML documentation lists the syntax for each diagram type. You can type syntax and check the result in this page at the same time.

Question 5

How do I share a diagram as an image?

Accepted Answer

Download it as SVG or PNG, or copy it to the clipboard and share from there.

Question 6

Does it work offline?

Accepted Answer

PlantUML preview requires a connection to an external server. The preview will not appear without network access.

PlantUML Preview