Is this synthetic data generator fully private?
Yes. Data is generated locally in your browser and is not uploaded to a server. That makes this tool suitable for privacy-focused development, QA testing, and GDPR-conscious workflows.
Synthetic Data Generator
Generate realistic fake JSON/CSV data for testing directly in your browser. Create schemas with custom field names, choose data types, and export safely with no server upload.
Schema Builder
Define field names and data types, then generate up to 100,000 rows locally in your browser.
Schema Templates
Optional. Use predefined schemas only if you need them.
Preview (first rows)
Generated: 0 rows
What you can generate
Build your own schema by setting field names and types like string, integer, small/big numbers, booleans, dates, datetime, UUID, first name, last name, city, address, postal code, and IBAN.
The generator runs fully client-side and currently supports up to 100,000 rows per dataset. Export the result as JSON or CSV in one click.
This browser-based fake data generator is built for QA teams, developers, analysts, and data engineers who need realistic dummy datasets without exposing production records. You can quickly create synthetic customer profiles, payment testing tables, and mock operational datasets for staging and demos.
Use it as a privacy-safe mock data tool for GDPR-conscious workflows, API contract testing, automated integration tests, and frontend development. Because everything runs locally, this synthetic data generator keeps sensitive workflows private while still producing useful test data at scale.
Generate fake names, emails, addresses, IBANs, ID cards, credit card numbers, CVV codes, and expiration dates with configurable schemas, then download ready-to-use JSON or CSV files. It is ideal when you need a fast and secure test data generator directly in the browser.
FAQ
What file formats can I export?
You can export datasets as JSON or CSV. For CSV output, you can choose common delimiters like comma, semicolon, pipe, or tab, and decide whether to include headers.
How many rows can I generate?
The current limit is up to 100,000 rows per generation. This allows realistic load testing and mock data preparation for many frontend, backend, and analytics scenarios.
What kind of fake data fields are supported?
You can generate generic values like strings, numbers, booleans, and timestamps, plus realistic typed fields such as names, emails, addresses, cities, ID cards, IBAN, credit card numbers, CVV, and expiration dates.
Can I start from predefined schemas instead of creating columns manually?
Yes. The tool includes schema templates for multiple domains such as healthcare, SaaS, e-commerce, logistics, marketing, and HR. You can apply a template and then edit fields as needed.