Fake / Test Data Generator
Build a schema and generate realistic mock data in bulk — export JSON, NDJSON, CSV or SQL. Seeded for reproducible fixtures, 100% private.
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🔒 100% private & offline — every value is synthesised in your browser from built-in lists; nothing is uploaded. The same seed + schema always reproduces the exact same data set. Generated content is fictional; credit-card numbers use known test ranges and are not real.
Why you’ll love Fake / Test Data Generator
Instant & free
No signup, no paywall, no limits — Fake / Test Data Generator works the moment the page loads.
Completely private
Everything runs in your browser. Nothing you enter is ever uploaded or stored on a server.
Works on any device
Fully responsive and touch-friendly — use it on your phone, tablet or desktop.
Built by developers
Accurate, fast and keyboard-friendly — the details developers care about.
How to use it
Open it
No download and no login — the tool is ready right at the top of this page.
Use it
Enter your details or start interacting. Everything updates live as you go.
Get your result
Copy, download or share your result in a single tap. That’s it.
Frequently asked questions
Fake / Test Data Generator is 100% free — no signup, no watermarks and no usage limits. It’s one of 200+ free tools we build and give away.
Never. Everything is processed locally in your browser — safe for secrets, tokens and proprietary code.
Completely. Fake / Test Data Generator runs entirely in your browser (client-side). Nothing you type, upload or generate is sent to our servers, so your data never leaves your device.
No. It works instantly in any modern web browser — Chrome, Safari, Edge or Firefox — on desktop and mobile.
Yes. The tool is fully responsive and touch-friendly, so it works great on phones and tablets as well as computers.
Global Maple System — a software & AI studio. We built Fake / Test Data Generator (and 200+ other free tools) to show what we can do. Need something custom built? We’d love to help.
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Fake / Test Data Generator is one of 200+ free tools from Global Maple System — a software & AI studio. Need a website, app, AI agent or automation? Let’s talk.