(--------)
For PNG:
java.exe -jar plantuml.jar -charset UTF-8 -DFILE_FORMAT_PNG=1 -gui
For SVG:
java.exe -jar plantuml.jar -charset UTF-8 -tsvg -DFILE_FORMAT_SVG=1 -gui .
@startuml !ifdef FILE_FORMAT_PNGAlice -> Bob: png!elseAlice -> Bob: svg!endif@enduml
http://www.plantuml.com/plantuml/png/SoWkIImgAStDKU1Ip4nBIKrJSFFqSOrtym_oTGo93_1pvtBCoKnELT2rKt3AJx9IACXBvr9CpIbEHHClBWE9vwLafd4v02cWWG00