JSON to Mongoose Schema

How to Use

1. Paste or type your JSON into the left panel. The tool validates it in real time.
2. Set a Model name (default: User). This names the schema variable and the Mongoose model.
3. Choose JavaScript or TypeScript output mode.
4. Toggle timestamps On or Off.
5. Click Generate Schema or wait for real-time conversion.
6. Click Copy to copy the output to your clipboard.

Type Mapping

• null → mongoose.Schema.Types.Mixed
• string → String
• number → Number
• boolean → Boolean
• array of primitives → [String] / [Number] / [Boolean]
• array of objects → [subSchema] (separate schema generated)
• nested object → separate schema variable referenced inline

Example

Given this JSON with model name User:

{"username": "alice", "age": 28, "tags": ["admin"], "address": {"city": "London"}}

JavaScript output (timestamps On):

const mongoose = require('mongoose');
const { Schema } = mongoose;

const addressSchema = new Schema({
  city: { type: String },
});

const userSchema = new Schema({
  username: { type: String },
  age: { type: Number },
  tags: [String],
  address: addressSchema,
}, { timestamps: true });

module.exports = mongoose.model('User', userSchema);