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Privacy Policy

Last updated: December 17, 2025

Introduction

Mermaid App ("we," "our," or "us") operates the mermaid-app.com website and the Mermaid Diagram Renderer ChatGPT application (collectively, the "Service"). This Privacy Policy explains our practices regarding the collection, use, and disclosure of information when you use our Service.

Information We Do Not Collect

We do not collect, store, or process any personal data. Our Service is designed with privacy as a core principle:

  • We do not collect personal information such as names, email addresses, or contact details
  • We do not store any diagrams or diagram code you create
  • We do not use cookies or similar tracking technologies
  • We do not track your usage or behavior
  • We do not collect device information or IP addresses
  • We do not create user accounts or profiles
  • We do not sell, rent, or share any data with third parties

How the Service Works

The Mermaid Diagram Renderer operates entirely within the ChatGPT environment. When you request a diagram:

  1. ChatGPT generates Mermaid diagram code based on your request
  2. The code is sent to our widget, which runs in your browser
  3. The diagram is rendered client-side using the Mermaid.js library
  4. No data is transmitted to or stored on our servers

All diagram processing occurs locally in your browser. We have no access to the content of your diagrams or your conversations with ChatGPT.

Third-Party Services

Our Service loads resources from the following third-party content delivery networks (CDNs):

  • cdn.jsdelivr.net - Hosts the Mermaid.js library used to render diagrams
  • cdn.tailwindcss.com - Hosts the Tailwind CSS framework for styling

These CDN providers may collect standard web server logs. Please refer to their respective privacy policies for more information.

ChatGPT Platform

Our Service operates within OpenAI's ChatGPT platform. Your interactions with ChatGPT are governed by OpenAI's privacy policy and terms of service. We recommend reviewing OpenAI's privacy practices at openai.com/privacy.

Data Security

Since we do not collect or store any user data, there is no user data at risk on our systems. The Service communicates over HTTPS to ensure secure transmission of diagram code between ChatGPT and the rendering widget.

Children's Privacy

Our Service does not collect any personal information from anyone, including children under 13. The Service is accessed through ChatGPT, which has its own age requirements and policies.

International Users

Our Service is available internationally. Since we do not collect personal data, there are no cross-border data transfers to be concerned about regarding your personal information.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date. You are advised to review this Privacy Policy periodically for any changes.

Contact Us

If you have any questions about this Privacy Policy, please contact us at: pallavmac@gmail.com