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Mock Data & Fixture StudioFree onlineNo sign-upNo upload
Generate Realistic Test Fixtures in JSON, CSV & SQL Locally
Synthesize deterministic, seedable test records (UUIDs, emails, timestamps, currencies, addresses, and custom schemas) and export JSON, CSV, or SQL `INSERT` batches in your browser.
Open the free Mock Data & Fixture Studio
No account required · Runs in your browser · Instant results
Mock Data & Fixture Studio — mock data generator json csv sql
Mock Data Studio lets QA and backend teams reproduce exact test datasets across CI runs without leaking real production customer records into staging environments.
Quick tip: Use a fixed numeric seed so teammates and automated tests generate identical fixture rows every run.
Frequently asked questions
Are generated emails and payment numbers safe synthetic fixtures?
Yes. All records use synthetic test domains and Luhn-valid test patterns rather than real personal data.
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Access all features of the Mock Data & Fixture Studio — free, browser-based, no account required.
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JSON, YAML, XML & Config Studio
Format, validate, minify, and convert JSON, YAML and XML. Inspect .env files, validate schemas, and generate TypeScript types locally. No upload required.
CSV, TSV & SQL Data Studio
Convert RFC 4180 CSV/TSV ↔ JSON, YAML, and Markdown tables, filter/sort columns in an interactive grid, generate typed SQL CREATE/INSERT scripts, and format PostgreSQL/MySQL/SQLite queries.