Privacy Policy

Last updated: May 03, 2026

1. Introduction

Welcome to Mermaid Studio. We respect your privacy and are committed to protecting your personal data. This privacy policy will inform you as to how we look after your personal data when you visit our website or use our mobile application.

2. Data We Do Not Collect

Mermaid Studio is designed to be a privacy-first application. We do not require account registration, and we do not collect or store any personal identification information. All diagrams you create are processed locally in your browser or on your device.

3. Local Storage

The application may use local storage (LocalStorage or AsyncStorage) to save your preferences, such as theme choice (Dark/Light mode) and your last edited diagram code. This data stays entirely on your device and is not transmitted to our servers.

4. Permissions

Our mobile application may request the following permissions:

  • Storage: To allow you to import diagram files (.mmd) and save exported images (.png) to your device's gallery or downloads folder.
  • Internet: To load the Mermaid rendering engine and allow sharing features.

5. Third-Party Services

We use Mermaid.js for diagram rendering. This is an open-source library that runs locally in your environment. We do not share your diagram data with any third-party analytics or tracking services.

6. Contact Us

If you have any questions about this Privacy Policy, you can contact us through the official support channels provided in the App Store or Play Store listings.