Understanding Mock Data

UI & API Testing

Populate a table, form, or API mock with realistic-looking data before real records exist.

Reproducible with a Seed

Enter the same seed twice to get the exact same rows back — useful for consistent test fixtures.

Pick Only What You Need

Select just the fields your schema requires — output columns always follow the same predictable order.

Local Processing

All data is generated entirely in your browser — nothing is sent to a server.

Fake Data, Not Real People

Every name, email, and phone number this tool produces is randomly assembled from generic word lists — it is not sourced from or associated with any real person. Any resemblance to a real name or email address is coincidental. Never use generated emails to actually send mail, and never substitute this tool for real anonymized data when testing privacy-sensitive systems.

Key Takeaways

Up to 100 Rows: Generate between 1 and 100 rows per run.
Optional Seed: Leave the seed blank for fresh random data every time, or set one for repeatable output.
Client-Side Only: Generation happens locally — no data is ever uploaded.

Mock / Fake JSON Data Generator Online