Database Schema Designer
Visually design MongoDB schemas with collections, fields, and relationships — then export to JSON, PNG, or SVG.
No collections yet
Click “Add Collection” in the toolbar to get started
No Collection Selected
Click on a collection in the canvas to view its details
The Database Schema Designer lets you visually build MongoDB-style schemas — collections, typed fields, constraints, and cross-collection references — directly in your browser.
Drag collections onto the canvas, define fields with types like String, Number, ObjectId, and Boolean, then draw relationships by connecting ObjectId handles between collections.
All processing happens entirely in your browser. Your schema is auto-saved to localStorage and never sent to any server.
- 1Click “Add Collection” to place a new collection node on the canvas.
- 2Select a collection to open the Inspector panel and add or edit fields.
- 3Set field types, toggle Required, Unique, Indexed, and Array flags.
- 4Hover over an ObjectId field to reveal handles, then drag to another ObjectId field to draw a relationship.
- 5Export your schema as JSON, PNG, or SVG using the toolbar buttons.
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