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Generate realistic fake JSON, CSV or SQL test data from a simple field schema: names, emails, dates, UUIDs and more.
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Among ToolsMonk's developer tools, Mock Data Generator covers a single everyday need: generate realistic fake JSON, CSV or SQL test data from a simple field schema: names, emails, dates, UUIDs and more. Open the page and start working, with no download or sign-up standing between you and the result.
Typical jobs it handles include seeding a database or api with realistic test data, populating a ui prototype with believable content, and load-testing an importer with hundreds of rows. The same page works on desktop, tablet, and mobile, so it is equally quick for a single urgent task and for work you repeat every week.
The design goal is simple: practical output on the first try, with a privacy-friendly workflow and the rest of the ToolsMonk library one click away.
| Price | Free, no signup, no paywall, no watermark |
|---|---|
| Works on | Any modern browser: desktop, tablet, and mobile |
| Processing | In your browser, files never leave your device |
| Account required | None |
| Category | Developer Tools |
Add fields and pick a type for each
Set how many rows to generate
Choose JSON, CSV or SQL output and generate
Copy or download the result
Define a field schema and generate realistic fake data instantly
Field types include names, emails, usernames, UUIDs, numbers, dates, cities, countries, phones, prices, sentences and URLs
Generate up to 1,000 rows at once
Export as JSON, CSV or SQL INSERT statements
Runs locally, no accounts, no limits, nothing uploaded
Seeding a database or API with realistic test data
Populating a UI prototype with believable content
Load-testing an importer with hundreds of rows
Creating sample datasets for demos and tutorials
Mock Data Generator was built so that anyone, professional or first-time visitor, gets what the page promises (generate realistic fake JSON, CSV or SQL test data from a simple field schema: names, emails, dates, UUIDs and more) in seconds. Results are instant and accurate, and nothing needs to be installed or signed up for along the way.
All processing runs locally in your browser, so your files and data never leave your device. Like every tool in the Developer Tools collection, it works across all modern browsers on desktop, tablet, and mobile: same features, same results, on every device.
Mock Data Generator builds realistic fake data from a simple field list. Add fields, pick a type for each, such as names, emails, usernames, UUIDs, numbers, dates, cities, countries, phone numbers, prices, sentences or URLs, and generate up to 1,000 rows at once.
Export the rows as JSON, as CSV, or as SQL INSERT statements. For SQL, set a table name and the statements are ready to paste into a database client, which makes seeding a development database a one-minute job.
Realistic values matter more than they seem. Placeholder text like test1 and test2 hides layout bugs, such as long names wrapping or overflowing, that believable data reveals straight away, and an importer behaves differently on varied values than on identical ones.
Use it to populate a prototype, demo or tutorial, to load-test an importer with hundreds of rows, or to share sample data without exposing anything real. The data is generated locally in your browser, with no account and no limit on how often you use it.
Choose SQL output and set a table name to get INSERT statements you can paste straight into a client.
Use the uuid and date types for realistic primary keys and timestamps.
Common questions about this tool, its workflow, and what to expect before you use it.
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Generate realistic fake JSON, CSV or SQL test data from a simple field schema: names, emails, dates, UUIDs and more.
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