Is the data really random?

Yes — every value is generated fresh on click using Math.random(). Emails don't correspond to real inboxes; they use the reserved example.com domain.

Can I add my own column type?

Not yet — the built-in types cover the common cases. Post-process the output in a spreadsheet if you need custom columns.

Are my files uploaded to a server?

No. Files are processed directly in your browser using JavaScript and WebAssembly. Nothing is uploaded to our servers, so your documents never leave your device.

Does it work on mobile?

Yes. The tools run in any modern browser on desktop, tablet, or mobile (Chrome, Edge, Safari, Firefox). Very large files may be slower on low-end phones.

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TOOL · 94 · Data & Utility

Mock Data Generator

Generate up to 10,000 rows of realistic fake data (names, emails, dates, IDs, booleans…) as JSON or CSV.

In short
Mock Data Generator produces realistic fake rows — names, emails, phone numbers, UUIDs, cities, dates, booleans — from column definitions you set. Up to 10,000 rows, exported as JSON or CSV.

Processed 100% in your browser — your files never leave your device.

RowsFormat

Preview (first 5 rows)

[
  {
    "id": 1,
    "name": "Casey Kumar",
    "email": "casey.smith@example.com",
    "country": "Nigeria",
    "signup_at": "2025-10-29"
  },
  {
    "id": 2,
    "name": "Jordan Kumar",
    "email": "harper.rossi@example.com",
    "country": "Japan",
    "signup_at": "2026-02-09"
  },
  {
    "id": 3,
    "name": "Harper Khan",
    "email": "jordan.rossi@example.com",
    "country": "Canada",
    "signup_at": "2026-02-12"
  },
  {
    "id": 4,
    "name": "Taylor Rossi",
    "email": "taylor.kim@example.com",
    "country": "United Kingdom",
    "signup_at": "2026-02-26"
  },
  {
    "id": 5,
    "name": "Casey Rossi",
    "email": "sam.kim@example.com",
    "country": "Egypt",
    "signup_at": "2025-12-17"
  }
]

How it works

Step · 01
Define your columns — pick a type (name, email, uuid, int, date…) for each.
Step · 02
Choose how many rows and whether you want JSON or CSV.
Step · 03
Click Generate — rows appear in a preview and download in one click.

Related tools

Frequently asked questions

Is the data really random?: Yes — every value is generated fresh on click using Math.random(). Emails don't correspond to real inboxes; they use the reserved example.com domain.
Can I add my own column type?: Not yet — the built-in types cover the common cases. Post-process the output in a spreadsheet if you need custom columns.
Are my files uploaded to a server?: No. Files are processed directly in your browser using JavaScript and WebAssembly. Nothing is uploaded to our servers, so your documents never leave your device.
Does it work on mobile?: Yes. The tools run in any modern browser on desktop, tablet, or mobile (Chrome, Edge, Safari, Firefox). Very large files may be slower on low-end phones.

International

This tool is also indexed for French, German and Arabic keywords.

Français

Générateur de données fictives — JSON et CSV

Générateur de données de test gratuit : jusqu'à 10 000 lignes réalistes (noms, emails, UUIDs, dates, booléens) exportées en JSON ou CSV.

Deutsch

Mock-Daten Generator — JSON und CSV kostenlos

Mock-Daten Generator kostenlos: Erzeugt bis zu 10.000 realistische Zeilen (Namen, E-Mails, UUIDs, Daten, Booleans) als JSON oder CSV.

العربية

منشئ بيانات تجريبية — JSON و CSV مجاناً

منشئ بيانات تجريبية مجاناً: يولّد حتى 10,000 صف من البيانات الواقعية (أسماء، بريد، UUID، تواريخ، قيم منطقية) بصيغة JSON أو CSV.