PlantUML Viewer
Preview PlantUML diagrams from text, fully offline with an SVG fallback. Local rendering.
About PlantUML Viewer
Preview PlantUML diagrams described in text. View sequence, use-case, class, and component diagrams without a PlantUML server.
How to Use
Upload or drag in a .puml, .pu, or .plantuml file. By default the viewer renders fully offline using an SVG source preview; no external server is contacted.
Privacy
Diagrams are rendered locally in your browser. The file is never uploaded to a server.
▶Which formats are supported?
PlantUML text files (.puml, .pu, .plantuml, .iuml). The offline mode shows an SVG preview of the source.
▶Do I need a PlantUML server?
No. The default offline mode needs no server. If your deployment configures a self-hosted PlantUML endpoint, server-rendered SVG is used instead.
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