Test data generator
Define columns, pick types like name, email, or date, and generate realistic mock data for testing and development. Export as JSON, CSV, or SQL — everything runs in your browser.
What is test data generation?
Test data generation creates realistic but fictional datasets that stand in for production data during development. Instead of copying sensitive records or hand-typing rows, a generator produces structurally correct data — names, emails, dates, numbers — on demand.
Good test data exercises the same code paths as real data without the privacy risk, and it's easy to regenerate whenever you need a fresh set.
When to use mock data
- Unit and integration testing with realistic inputs
- Prototyping UIs before the backend is ready
- Building demo environments and sales decks
- Load testing and performance benchmarks
- Seeding development and staging databases
How this generator works
Define columns with a name and a type. The generator randomly samples from curated lists of first names, last names, cities, companies, and domains to produce data that looks plausible. Numeric and date columns use bounded random ranges. Choose JSON for structured output, CSV for spreadsheets and flat files, or SQL INSERT statements for direct database seeding.
From test data to real insights
Once you move past mock data and start working with production datasets, Basedash can skip the manual query-writing step entirely. Describe the insight you need in plain English, and Basedash writes the query, runs it, and renders the visualization — all in seconds. It connects to PostgreSQL, MySQL, BigQuery, Snowflake, and 750+ other data sources.
FAQ
What data types are available?
ID, UUID, first name, last name, full name, email, phone, date, boolean, integer, decimal, company, city, country, URL, and paragraph.
Is my data stored or sent to a server?
No. All generation happens in your browser using JavaScript. Nothing is transmitted.
What output formats are supported?
JSON, CSV, and SQL INSERT statements. Each can be copied or downloaded.
How many rows can I generate?
Up to 10,000 rows at once. Generation is near-instant for most row counts.
Is the generated data realistic?
Data is randomly sampled from curated lists of real names, cities, companies, and domains. It looks realistic but is entirely fictional.
Can I customize the SQL table name?
Yes. When SQL output is selected, a table name input appears. The default is "users".
Skip the test data — explore your real data with AI
Connect your data and describe what you want to see. Basedash handles the query, visualization, and dashboard.