Enter Mermaid diagram syntax to create flowcharts, sequence diagrams, and more
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Privacy Policy
Last updated: September 28, 2025
Information We Collect
Mermaid Canvas is designed with privacy in mind. We collect minimal information to provide you with the best experience:
Usage Analytics: We use Google Analytics to understand how our application is used, which helps us improve the service.
Diagram Content: Your diagram code is processed locally in your browser and is not stored on our servers.
Theme Preferences: Your theme selection (light/dark) is stored locally in your browser.
How We Use Your Information
To provide and improve our diagram creation service
To analyze usage patterns and optimize performance
To maintain the security and functionality of our application
Data Storage
Your diagram content is processed entirely in your browser and is not transmitted to our servers unless you explicitly choose to export it. All data processing happens locally on your device.
Cookies and Local Storage
We use minimal local storage to remember your preferences:
Theme preference (light/dark mode)
Zoom level settings
Pane size preferences
Third-Party Services
We use the following third-party services:
Google Analytics: For usage analytics and performance monitoring
Cloudflare: For hosting and content delivery
Mermaid.js: For diagram rendering (processed locally)
Your Rights
You have the right to:
Access any personal information we may have
Request deletion of your data
Opt out of analytics tracking
Clear your local storage at any time
Contact Us
If you have any questions about this Privacy Policy, please contact us at [email protected]
Changes to This 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.
Terms of Service
Last updated: September 28, 2025
Acceptance of Terms
By accessing and using Mermaid Canvas, you accept and agree to be bound by the terms and provision of this agreement. If you do not agree to abide by the above, please do not use this service.
Description of Service
Mermaid Canvas is a free, web-based diagram creation tool that allows users to:
Create various types of diagrams using Mermaid.js syntax
Preview diagrams in real-time
Export diagrams as PNG images
Switch between light and dark themes
User Responsibilities
As a user of Mermaid Canvas, you agree to:
Use the service only for lawful purposes
Not create content that is illegal, harmful, or violates any rights
Not attempt to disrupt or damage the service
Respect the intellectual property rights of others
Prohibited Uses
You may not use Mermaid Canvas:
For any unlawful purpose or to solicit others to perform unlawful acts
To violate any international, federal, provincial, or state regulations, rules, laws, or local ordinances
To infringe upon or violate our intellectual property rights or the intellectual property rights of others
To harass, abuse, insult, harm, defame, slander, disparage, intimidate, or discriminate
To submit false or misleading information
To upload or transmit viruses or any other type of malicious code
Intellectual Property
The service and its original content, features, and functionality are and will remain the exclusive property of Mermaid Canvas and its licensors. The service is protected by copyright, trademark, and other laws.
You retain ownership of any diagrams you create using Mermaid Canvas. However, you grant us a license to use, reproduce, and distribute your content as necessary to provide the service.
Privacy
Your privacy is important to us. Please review our , which also governs your use of the service, to understand our practices.
Cancellation and Refunds
You may cancel your agreement and return any purchased products within 14 days of purchase. This refund policy is in accordance with our payment processor's Buyer Terms and is designed to provide you with confidence in your purchase while avoiding chargebacks and associated fees.
To request a refund, please contact us at [email protected] within 14 days of your purchase date. We will process your refund request promptly.
We reserve the right to terminate or suspend your access to the service at any time, with or without notice, for any reason, including violation of these Terms of Service.
Service Availability
We strive to provide continuous service availability, but we do not guarantee that the service will be available at all times. We may experience downtime for maintenance, updates, or other reasons beyond our control.
Limitation of Liability
In no event shall Mermaid Canvas, nor its directors, employees, partners, agents, suppliers, or affiliates, be liable for any indirect, incidental, special, consequential, or punitive damages, including without limitation, loss of profits, data, use, goodwill, or other intangible losses, resulting from your use of the service.
Disclaimer
The information on this service is provided on an "as is" basis. To the fullest extent permitted by law, this Company excludes all representations, warranties, conditions and terms relating to our service and the use of this service.
Governing Law
These Terms shall be interpreted and governed by the laws of India, without regard to its conflict of law provisions.
Changes to Terms
We reserve the right, at our sole discretion, to modify or replace these Terms at any time. If a revision is material, we will try to provide at least 30 days notice prior to any new terms taking effect.
Contact Information
If you have any questions about these Terms of Service, please contact us at [email protected]
About Mermaid Canvas
Create beautiful Mermaid.js diagrams online with our AI-powered live editor. Supports flowcharts, sequence diagrams, Gantt charts, class diagrams, state diagrams, pie charts, journey diagrams, git graphs, quadrant charts, requirement diagrams, sankey diagrams, timelines, mind maps, ER diagrams, C4 architecture diagrams, block diagrams, packet diagrams, and more.
Features
Real-time Preview: See your diagrams update as you type
Multiple Diagram Types: Flowcharts, Sequence diagrams, Gantt charts, Class diagrams, State diagrams, Pie charts, Journey diagrams, Git graphs, Quadrant charts, Requirement diagrams, Sankey diagrams, Timelines, Mind maps, Entity Relationship diagrams, C4 Context diagrams, Block diagrams, and Packet diagrams
Export Capabilities: Download your diagrams as high-quality PNG images
Theme Support: Switch between light and dark themes
Responsive Design: Works perfectly on desktop, tablet, and mobile devices
No Registration Required: Start creating diagrams immediately
Free to Use: All features are completely free
Privacy & Data
Your diagram content is processed entirely in your browser and is not stored on our servers. We only collect minimal analytics to improve the service.
