Mock Data Generator
Builds a custom schema of named fields backed by realistic fake data (names, emails, addresses, and more) and generates sample rows as JSON or CSV.
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Mock Data Generator — Free Online Tool
Builds a custom schema of named fields backed by realistic fake data (names, emails, addresses, and more) and generates sample rows as JSON or CSV.
How to use the Mock Data Generator
- Open the tool above — it runs entirely in your browser, so your input never leaves this page.
- Paste or type your input into the field, then press the relevant button (e.g. Encode / Decode, Generate, or Convert).
- Copy the result from the output area with the copy button orCtrl/Cmd + C.
- No signup, no upload, and no tracking — repeat as often as you need.
Frequently asked questions
Is the Mock Data Generator free to use?
Yes. The Mock Data Generator is completely free, with no signup, no ads inside the tool, and no hidden limits.
Does the Mock Data Generator upload my data?
No. The Mock Data Generator processes everything locally in your browser. Your input is never sent to a server, so it stays private even on shared devices.
Does the Mock Data Generator work offline?
After the page loads, the Mock Data Generator runs entirely in your browser, so it keeps working without a network connection.
Free & private — why use this Mock Data Generator
The Mock Data Generator runs 100% client-side in your browser. Your data is never uploaded to a server, no account is required, and the tool is completely free. It works offline once the page has loaded and is part of a growing collection of privacy-first developer utilities.