Mermaid Diagram Editor
π How to Use
Edit code: Enter Mermaid syntax in the left panel, preview updates in real-time.
Use presets: Click preset buttons to load examples.
Export: Download as SVG or copy code for Markdown documents.
β Frequently Asked Questions
Can I use Mermaid Diagram Editor on my phone?
Yes. Mermaid Diagram Editor is fully responsive and works on phones, tablets, and desktops. The interface adapts automatically to your screen size.
Do I need to install any software?
No. Mermaid Diagram Editor is a web-based tool β just open it in your browser and start using it. No downloads, plugins, or extensions required.
Are there any usage limits for Mermaid Diagram Editor?
Mermaid Diagram Editor has no usage limits β it's free and unlimited. Since processing is done client-side, speed depends on your device. For very large files, we recommend processing in batches for the best experience.
Is Mermaid Diagram Editor free to use?
Yes, Mermaid Diagram Editor is completely free to use. No registration or login required β all features are available immediately.
Is my data safe when using Mermaid Diagram Editor?
Absolutely. Everything runs locally: en/mermaid-editor/index.html and other values are processed on your device, never sent to a server. No data is sent to any server, so there's zero risk of data leaks. Your information stays completely under your control.
Does Mermaid Diagram Editor upload my data to a server?
No. Mermaid Diagram Editor uses client-side processing β everything runs in your browser. Your data never leaves your device, and the tool works even without an internet connection.