Welcome to Aquaubu's odds and ends served up at https://aquabu.github.io
Somewhat usefully you can render a PlantUML image using a url parameter like so: https://aquabu.github.io/plantuml.html?plantuml=%40startuml%0AAlice%20-%3E%20Bob%3A%20Authentication%20Request%0ABob%20--%3E%20Alice%3A%20Authentication%20Response%0A%0AAlice%20-%3E%20Bob%3A%20Another%20authentication%20Request%0AAlice%20%3C--%20Bob%3A%20Another%20authentication%20Response%0A%40enduml