PlantUML Diagrams: UML & C4 in Tabs for Jira

by Simplify

works with Jira Cloud

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Key highlights of the appPlantUML, UML and C4 diagrams in tabs on Jira issues and project pages, next to Mermaid, BPMN, LaTeX and charts, one tab each

watch PlantUML Diagrams: UML & C4 in Tabs for Jira video

Tabs that organize an issue

Split what the issue needs into tabs — flow, data model, formula, rollout — instead of one long description. Rename, reorder by drag and drop, delete.

A diagram type for every tab

Each tab picks its own type: Mermaid, PlantUML with C4 built in, BPMN 2.0, LaTeX math, Graphviz, Vega-Lite charts or WaveDrom. Existing nomnoml tabs keep working.

Templates for every project

Keep a project's reference tabs on its project page and clone a tab set to any issue or project in one step — add to the tabs there or replace them.

Supporting media

More details

Tabs on every Jira issue and on each project page
Each tab: a title, an optional description and one diagram
Diagram types: PlantUML with C4 built in (sequence, class, activity, use case, state, C4; no PlantUML server), Mermaid (flowcharts, UML class/sequence/state, ER, Gantt, mind maps), BPMN 2.0 modeler, LaTeX math, Graphviz, Vega-Lite charts, WaveDrom
Existing nomnoml tabs keep working
Clone all tabs to another issue or project page
Jira permissions respected; conflict-safe saving; up to 4 MB per issue; dark theme
A new tab shows a card per type — click one and its example opens; every change saves itself; full screen for any diagram

Get started: open an issue → Apps → Issue Tabs → click the PlantUML or Mermaid card → Done.

Runs on Atlassian Forge: stored in your site, rendered in the browser, no external calls.

Resources

App documentation
Comprehensive set of documentation from the partner on how this app works

Privacy and Security

Privacy and security questionnaire has been filled by the partner

Privacy policy

Atlassian's privacy policy is not applicable to the use of this app. Please refer to the privacy policy provided by this app's partner.

Partner privacy policy

Security program

This app is not part of the Marketplace Bug Bounty program.

Integration permissions

PlantUML Diagrams: UML & C4 in Tabs for Jira integrates with your Atlassian app

Version information

Version 2.13.0•for Jira Cloud

Release date: Nov 11th 2026
Summary: Minor version update
Details: Minor version update
Payment model: Paid via Atlassian
License type: Commercial