📊 Mock Data Generator
Generate realistic synthetic test data for QA, API mocks, and database seeding in JSON, CSV, or SQL formats with custom row counts.
Why Use a Client-Side Mock Data Generator?
Building frontend web applications, mobile interfaces, or database migrations requires realistic mock data to test edge cases, pagination, and layout limits. Traditional tools like Mockaroo require accounts, rate-limit downloads, or require you to transmit proprietary schema details to third-party cloud servers.
Generate up to 500 rows instantly without waiting for remote server roundtrips or API quotas.
Keep your staging schemas and internal column configurations completely off the public Internet.
Seamlessly toggle between JSON for REST APIs, CSV for spreadsheets, and ready-to-run SQL INSERT statements.
Frequently asked questions
Is any mock data uploaded or stored on your servers?
No. All mock data rows and export formats (JSON, CSV, SQL) are computed 100% inside your web browser using client-side JavaScript. No data is ever transmitted across the network or logged on any server.
What data presets are available?
You can generate realistic datasets for User Profiles (UUID, name, email, country, city, phone, creation timestamp), E-Commerce Products (SKU, title, category, price, stock, ratings), and Server Access Logs (request ID, IP address, HTTP method, endpoint, status code, latency).
How does the SQL export handle escaping and data types?
The SQL exporter automatically outputs standard SQL INSERT INTO statements. Strings and timestamps are properly single-quoted with single-quote escaping (''), while numbers and booleans remain unquoted, and nulls are output as NULL.
Can I use this mock data for commercial testing and staging environments?
Yes. All generated data is synthetic and completely free to use for personal, open-source, or commercial projects without attribution or account restrictions.
What is the maximum number of rows I can generate at once?
You can generate up to 500 rows instantly in a single click with sub-50ms execution. For pagination and layout stress-testing, this provides ample data without causing browser memory lag.