About
Mermaid Diagram Viewer is a free Bitbucket app that automatically renders Mermaid diagram files (.mmd and .mermaid) directly in your repository browser. No more viewing raw text - see your flowcharts, sequence diagrams, and more as beautiful visualizations!
Features
📊 Full Mermaid Support
Renders all Mermaid diagram types including flowcharts, sequence diagrams, class diagrams, and more.
🔍 Pan & Zoom
Interactive controls to zoom in/out and pan around large diagrams for easy viewing.
⚡ Fast Loading
Optimized rendering for quick diagram display with no external dependencies.
🔒 Secure & Private
No data storage or tracking. Everything runs in your browser using Atlassian Forge.
How to Use
- Install the app from Atlassian Marketplace
- Open any
.mmd or .mermaid file in your Bitbucket repository
- Select "Diagram Viewer" from the file viewer dropdown
- View your beautifully rendered diagram with pan and zoom controls!
Supported Diagram Types
- Flowcharts
- Sequence Diagrams
- Class Diagrams
- State Diagrams
- Entity Relationship Diagrams
- User Journey Diagrams
- Gantt Charts
- And more...
Privacy Policy
Last Updated: January 24, 2026
Overview
Mermaid Diagram Viewer is a Bitbucket app built on Atlassian Forge that renders Mermaid diagram files directly in your Bitbucket repository.
Information We Access
- File Content: The app reads Mermaid diagram files (.mmd, .mermaid) to render them as visual diagrams
- Repository Information: Basic metadata (workspace ID, repository UUID, file path, commit hash) to locate files
How We Use Information
- File content is only used for real-time rendering in your browser
- Diagram rendering happens client-side in your web browser
- No data is stored on our servers or databases
- No data is transmitted to third parties
- All processing occurs within Atlassian's secure Forge platform
Data Storage & Sharing
- We do not store any user data or file content
- We do not use cookies or tracking mechanisms
- We do not collect analytics or usage data
- We do not share any data with third parties
- We do not sell user information
Security
- Operates within Atlassian Forge's secure, sandboxed environment
- File access authenticated through Bitbucket's native authentication
- Only files you have permission to view can be accessed by this app
Permissions Required
read:repository:bitbucket - To read Mermaid diagram files from your repositories- External fetch to
api.bitbucket.org - To retrieve file content from Bitbucket's API
Your Rights
- You can uninstall the app at any time
- Uninstalling removes all app access to your repositories
- No residual data is retained after uninstallation
Compliance
This app complies with:
- Atlassian's App Security Requirements
- Atlassian Forge platform policies
- General Data Protection Regulation (GDPR) principles
- California Consumer Privacy Act (CCPA) where applicable
Support
Need help or have questions?