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Turtle ERD Maker

Create entity-relationship diagrams for database design. Define tables, columns, and relationships with simple text — get a professional ERD. Export PNG or SVG.

Create entity-relationship diagrams online from simple text — no expensive database design tools needed. Define tables with columns and data types, then specify relationships using standard notation. The ERD renders instantly with crow's foot symbols. Export as PNG for presentations or SVG for documentation. Everything runs in your browser.

How do I create an ER diagram?

Define entities with their attributes using simple text syntax. Then define relationships between entities using ||--o{ (one-to-many), ||--|| (one-to-one), or }o--o{ (many-to-many) notation. The diagram renders instantly.

What relationship types are supported?

One-to-one (||--||), one-to-many (||--o{), many-to-many (}o--o{), and zero-or-one variations. Each renders with standard crow's foot notation.

Can I use this for database design?

Yes. Define your tables, columns with data types, and relationships. The resulting ERD is perfect for database documentation, design reviews, and README files.

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