MongoDB to Mongoose Schema Generator
Convert MongoDB JSON documents into a Mongoose schema quickly with this free online MongoDB to Mongoose Schema Generator. Paste your MongoDB document or JSON data and the tool automatically detects fields, data types, arrays, nested objects, ObjectIds, dates, numbers, booleans, and other supported structures.
After importing your JSON, you can edit the generated schema visually. Change field names, modify field types, enable required, unique, index, sparse, trim, uppercase, lowercase, immutable, and select options, configure defaults and validation rules, and generate the Mongoose schema in real time.
MongoDB to Mongoose Converter Features
- Automatic Field Detection: Extracts fields from MongoDB JSON documents automatically.
- Editable Field Names: Rename generated fields directly from the schema table.
- Editable Data Types: Change a detected field between String, Number, Boolean, Date, ObjectId, Array, Object, Mixed, Decimal128, and Buffer.
- MongoDB ObjectId Detection: Detects MongoDB Extended JSON ObjectIds and converts them to mongoose.Schema.Types.ObjectId.
- Nested Object Support: Detects nested MongoDB objects and generates nested Mongoose schema structures.
- Array Type Detection: Detects arrays and allows you to select the array element type.
- Real-Time Schema Updates: Every change made in the field table is immediately reflected in the generated Mongoose schema.
- Copy Generated Schema: Copy the generated Mongoose code directly to your clipboard.
Mongoose Field Options
The field editor provides commonly used Mongoose schema properties so you can customize your generated schema without manually writing every option.
- Required: Mark a field as mandatory.
- Unique: Create a unique index for a field.
- Index: Add a Mongoose index option.
- Sparse: Enable sparse indexing for optional fields.
- Trim: Automatically remove whitespace from string values.
- Uppercase: Convert string values to uppercase.
- Lowercase: Convert string values to lowercase.
- Immutable: Prevent a field from being changed after creation.
- Select: Control whether a field is included by default in Mongoose query results.
How to Convert MongoDB JSON to a Mongoose Schema
- Prepare your MongoDB JSON: Copy one MongoDB document or an array containing multiple MongoDB documents.
- Paste the JSON: Paste your document into the MongoDB JSON input editor.
- Review detected fields: The generator automatically creates a table containing the detected field names and data types.
- Edit field names: Change any field name directly in the Field Name column.
- Change field types: Select the appropriate Mongoose-compatible type from the Type dropdown.
- Configure field options: Enable Required, Unique, Index, Sparse, Trim, Uppercase, Lowercase, Immutable, or other available options.
- Add validation: Configure default values, minimum and maximum values, string length limits, enum values, regular expression matching, and references where applicable.
- Configure schema settings: Set the model name, output format, timestamps, versionKey, id, strict mode, strictQuery, minimize, autoIndex, and collection options.
- Copy the generated code: Copy the generated Mongoose schema or complete Mongoose model and use it in your Node.js application.
MongoDB JSON to Mongoose Model
The generator can produce more than a basic schema definition. Select the Complete Model output option to generate a Mongoose model containing the required Mongoose import, schema definition, model creation, and default export.
This makes it convenient for developers working with Node.js, Express.js, and MERN stack applications who want to quickly turn an existing MongoDB document structure into reusable Mongoose model code.
Configure Mongoose Schema Settings
In addition to individual field options, you can configure global Mongoose schema settings directly from the Schema Settings section.
- Model Name: Set the name used when generating the Mongoose model.
- Output: Choose between Schema Only and Complete Model.
- timestamps: Automatically add Mongoose createdAt and updatedAt timestamps.
- versionKey: Enable or disable Mongoose's version key.
- id: Enable or disable the virtual id option.
- strict: Configure how Mongoose handles fields that are not defined in the schema.
- strictQuery: Configure strict handling of query filters.
- minimize: Configure whether empty objects are minimized.
- autoIndex: Control automatic index creation.
- collection: Specify a custom MongoDB collection name.
Supported MongoDB and Mongoose Data Types
The MongoDB to Mongoose converter supports common MongoDB and JavaScript data structures and provides corresponding Mongoose types.
Working with MongoDB Extended JSON
MongoDB exports can contain Extended JSON values such as $oid, $date, $numberInt, $numberLong, $numberDouble, and $numberDecimal. This generator recognizes several of these MongoDB-specific structures and maps them to appropriate Mongoose schema types.
Why Use a MongoDB to Mongoose Schema Generator?
MongoDB allows flexible document structures, while Mongoose provides schemas, validation, type casting, indexes, defaults, and other modeling features for MongoDB applications running on Node.js.
When you already have MongoDB documents, manually creating a Mongoose schema can be repetitive. This tool gives you a fast starting point by analyzing your existing JSON and converting its structure into editable Mongoose schema code.
MongoDB to Mongoose Converter for Node.js and MERN Developers
This tool is useful for Node.js, Express.js, MongoDB, Mongoose, and MERN stack developers. You can use it when creating a new application from existing MongoDB data, migrating an existing project to Mongoose, prototyping database models, or generating an initial schema from sample JSON documents.
Free Online MongoDB Schema Generator
This MongoDB to Mongoose Schema Generator is designed to work directly in your browser. No MongoDB connection is required and you can edit the detected fields before generating the final schema. Use it as a quick developer utility whenever you need to convert MongoDB JSON into Mongoose schema or model code.
Frequently Asked Questions
Can I edit the generated field names?
Yes. Every detected field name can be edited directly from the Schema Fields table.
Can I change the detected MongoDB data type?
Yes. You can change the type of any field using the Type dropdown and select a different supported Mongoose data type.
Can I make a field required or unique?
Yes. Use the Required and Unique checkboxes in the Schema Fields table. The generated schema updates automatically.
Can I add timestamps to the schema?
Yes. Enable the timestamps option under Schema Settings to generate timestamps: true.
Can I generate a complete Mongoose model?
Yes. Select Complete Model from the Output option to generate the Mongoose import, schema, model definition, and export statement.
Does the tool require a MongoDB connection?
No. The converter works from the JSON you provide and does not require a MongoDB database connection.
Can I convert multiple MongoDB documents?
Yes. You can paste an array of MongoDB objects. The generator analyzes the documents and builds a combined field structure from them.