ZenUML Pricing and Plans

Each instance of a supported ZenUML macro on a Confluence page counts towards the limit. The count is per space, not per page or per user. A site with five spaces has five separate allowances of 100 macros on Lite.

When a space reaches 100 macros, every existing macro stays viewable on Confluence pages and exportable. The cap blocks creating or saving new macros and opening the fullscreen viewer in that space. An upgrade prompt appears. Your other spaces are not affected.

To upgrade, start a Full trial from the Atlassian Marketplace listing. Your existing macros stay in place; no migration is required.

If a Full trial ends or you cancel, the app returns to Lite. All existing macros remain viewable. Spaces at or above 100 macros cannot create or save new macros or open the fullscreen viewer until Full is restored.

• Up to 10 Confluence users

  Full costs nothing at this tier. Install Full rather than Lite and skip the per-space macro cap from day one.

• One team documenting in one or two spaces

  Lite covers up to 100 macros in each space. Start on Lite and move to Full when a space fills up.

• Engineering organisations with many spaces

  Full removes the macro cap across every space and adds priority support. Pricing varies with the total number of users on your Confluence site; see the table above.

• Regulated or data-residency-sensitive organisations

  Saved macro content is stored in Confluence and synced to our backend by default. Both Lite and Full customers can request to opt out of this backend sync. Some AI features will be unavailable when backend sync is disabled.

• A single public Confluence space

  Anonymous viewers are not billed. Choose a plan based on the number of macros in your space: use Lite for up to 100 macros, or Full if you need more than 100.

• Diagrams, API specifications and Markdown

  Our Confluence apps support ZenUML, Mermaid, PlantUML, DrawIO, OpenAPI, AsyncAPI and Markdown. Availability varies by app.

• Confluence storage with backend sync

  Saved macro content is stored in Confluence and synced to our backend by default. Both Lite and Full customers can request to opt out of this backend sync. Some AI features will be unavailable when backend sync is disabled. PlantUML source is sent to plantuml.com for rendering.

• Diagram as code

  Every diagram is plain text. Copy it, keep it in Git, and review changes in a pull request.

• Built on Atlassian Forge

  ZenUML for Confluence is built on Atlassian Forge, with no legacy Connect runtime. Forge provides a sandboxed runtime and automatic updates.

• A support team you can reach

  Support runs through the Atlassian Jira Service Desk, with a team based in Australia, China and the United States. Full customers receive priority support, with a first response within 8 hours during support hours, or within 24 hours outside support hours. Support hours: Mon–Sun, 8 am–8 pm (GMT+11).

Trusted by teams at Airwallex, Coles Group, Burberry, DLA Piper, Fireblocks and Auckland Council. These organisations use ZenUML for Confluence. The list does not imply a partnership or endorsement.

Sites of 500 users or more, and any organisation running a security review, usually need more than the Marketplace listing. ZenUML provides privacy notes, permission notes and procurement material on request. You can also purchase ZenUML through an Atlassian Solution Partner or reseller.

Engineering managers and directors can book a 30-minute consultation on fitting ZenUML into their development workflow.

Contact [email protected].

• Is ZenUML free?

  Yes. ZenUML Lite is free with no time limit, for any number of users. It supports diagrams, API specifications and Markdown, with up to 100 macros per Confluence space. Full is a paid plan with a 30-day free trial.

• Does ZenUML charge per user?

  Full uses Atlassian's user-tier model. You pay one flat amount for your site's tier, not a separate fee per seat. Sites of up to 10 users pay nothing.

• Do read-only Confluence users count toward the tier?

  Yes. Regular licensed Confluence users count toward the app tier even if they only view content. Guests and anonymous viewers are not billable Confluence users.

• What happens to my diagrams if I cancel Full?

  They stay in your Confluence and remain viewable on Lite. Spaces at or above 100 macros cannot create or save new macros or open the fullscreen viewer until Full is restored.

• Does ZenUML work on Confluence Server or Data Center?

  No. ZenUML for Confluence is a Forge app and runs on Confluence Cloud only.

• Is my diagram content sent to ZenUML servers?

  Yes. Saved macro content is synced to our backend by default, while Confluence remains the system of record. Both Lite and Full customers can request to opt out of this backend sync. Some AI features will be unavailable when backend sync is disabled. PlantUML source is sent to plantuml.com for rendering.

• Can I move diagrams from draw.io, Gliffy or Lucidchart?

  DrawIO files open directly in the DrawIO diagram type. For image-only diagrams from other tools, use Diagramly.ai to convert the image into the diagram type you need.

• Is there a discount for annual billing or renewals?

  Annual billing may cost less than paying monthly for a full year; compare the annual total for your user tier on the Atlassian Marketplace. Cloud app renewals do not receive an automatic renewal discount. Your final price follows Atlassian's current quote and any applicable discounts. You can also contact your Atlassian Solution Partner for a quote and to discuss available discounts.