transformer.mock.schema
transformer.mock.rows
Limit is 10000.
formatter.output
How to Create Your Mock Data Template
Static values: Use plain values for any field."country": "USA"
Blank values: Use {{blank}} for a blank field (empty string in output)."email": "{{blank}}"
Numbers & booleans: Use numbers or true/false directly."price": 99.99, "isActive": true
Dynamic values: Use {{type}} for auto-generated data."name": "{{name}}", "email": "{{email}}", "date": "{{date}}"
Limit field size: Use {{type:length}} to trim the value."shortName": "{{name:8}}", "shortWord": "{{word:5}}"
Nested objects & arrays: Use any combination, including faker and static values."profile": {"bio": "{{sentence:20}}"}, "tags": ["alpha", "{{word}}"]
Supported dynamic types:
nameemailphoneaddresscitycountrycompanyurluuididdateamountpricetotalboolbooleanwordsentenceblank
Examples:
"username": "{{name:8}}" will generate a name trimmed to 8 characters.
"email": "{{blank}}" will generate a blank email field.
Note: Maximum number of records is 10000.
Mock Data Generator Online – Random Test Data
Generate realistic fake data — names, emails, addresses, dates, and more — for testing, prototyping, and seeding databases, using a simple template syntax.
 Generate Realistic Mock Data
Define a template using placeholders like {{name}}, {{email}}, or {{address}}, and this mock data generator produces realistic, randomized JSON records instantly — no backend, no setup.
Useful for:
  • fake data generator for testing
  • generate sample json records
  • seed data for database development
  • mock api response generator
Why Use Mock Data?
  • Populate a UI or demo without a real backend
  • Seed a development database quickly
  • Generate realistic test fixtures for QA
  • Prototype an API response shape
Supported Data Types
  • Names, emails, and phone numbers
  • Addresses, cities, and countries
  • Dates, booleans, and IDs
  • Words, sentences, and financial amounts
  • Bulk generation of multiple records
Common Use Cases
Seeding a local development database
Filling a frontend demo with sample records
Building test fixtures for unit tests
 How to Use
  1. Write a template with fields like {{name}} and {{email}}
  2. Set how many records to generate
  3. Click Generate and copy the resulting JSON
Related Tools
JSON FormatterUUID GeneratorJSON Masker
 FAQ
Is the generated data real?
No. All data is randomly generated and fictitious — it never represents real people or accounts.
Which fields can I generate?
Names, emails, phone numbers, addresses, cities, countries, dates, IDs, booleans, and more using simple template placeholders.
Can I generate multiple records at once?
Yes, set the record count and the tool produces a JSON array with as many entries as you need.
Generate Mock Data Now
Create realistic test data in seconds.
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