·7 min read
How to Export PlantUML as PNG or SVG in OnUML
Export PlantUML diagrams from OnUML as PNG or SVG, save editable cloud projects, restore browser drafts, and create public share links.
plantumlpngsvgexportonuml
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Tutorials, guides, and best practices for UML diagramming
Series
·8 min read
PlantUML C4 Diagrams: Context, Container, and Component
Create PlantUML C4 diagrams for system context, containers, and components using C4-PlantUML macros, reproducible includes, and a connected example.
plantumlc4-modelsoftware-architecturec4-plantuml
·6 min read
PlantUML Class Diagram: Relationships, Syntax, and Examples
Build a PlantUML class diagram with fields, methods, visibility, inheritance, interfaces, dependency, aggregation, composition, and multiplicity.
plantumlclass-diagramumldomain-modeling
·7 min read
PlantUML Colors and Themes: A Practical Styling Guide
Learn how to style PlantUML diagrams with named colors, hex values, built-in themes, CSS-like styles, and accessible color choices.
plantumlplantuml-colorsplantuml-themesdiagram-styling
·7 min read
PlantUML ER Diagram: Entities, Keys, and Relationships
Create a PlantUML ER diagram with entities, keys, required attributes, and crow's-foot cardinality, and compare IE, Chen, and class diagram notation.
plantumler-diagramerddatabase-design
·17 min read·Featured
PlantUML Examples: Diagrams, Syntax, and Workflows
Explore copyable PlantUML examples for sequence, class, ER, C4, activity, component, and state diagrams, then learn how to style, save, and export them.
plantuml-examplesplantuml-diagramplantuml-syntaxplantuml-diagramsplantuml-example
·8 min read
PlantUML Layout Guide: Direction, Spacing, and Nested Boxes
Control PlantUML layout with direction, containers, spacing, layout engines, and restrained relationship hints without fragile positioning hacks.
plantumlplantuml-layoutnested-boxesdiagram-layout
·7 min read
PlantUML Newpage Not Working? Rendering and Output Fixes
Learn why PlantUML newpage shows one image in OnUML and split long sequence diagrams into tabs that can be previewed, saved, and exported.
plantumlplantuml-newpagepage-breaktroubleshooting
·9 min read
PlantUML Sequence Diagram: Syntax and Real-World Examples
Build authentication and REST API flows with PlantUML participants, messages, activation bars, conditions, loops, and numbering.
plantumlsequence-diagramumlapi-design
·8 min read
PlantUML WYSIWYG Editor: Can You Drag and Drop Diagrams?
Learn what WYSIWYG and drag-and-drop mean for PlantUML, what the language supports, and how to choose between text-first, visual, and hybrid editors.
plantumlplantuml-wysiwyg-editordrag-and-dropdiagram-editor