GeneratorsDemo Data Generator

Demo Data Generator

Generate realistic mock datasets for testing and prototyping. Build a custom schema by picking field types — names, emails, addresses, dates, UUIDs, booleans, and more — then export any number of records as JSON or CSV. Includes ready-made presets for common schemas like User, Product, Order, Employee, and Address.

Schema

Preset:

Click to add field

Auto ID

First Name

Last Name

Age

Username

City

Country

Output

Count:

Demo Data Generator guide

Demo Data Generator runs in your browser, which keeps everyday developer workflows fast and avoids unnecessary uploads for normal use. Generate realistic mock datasets for testing and prototyping. Build a custom schema by picking field types — names, emails, addresses, dates, UUIDs, booleans, and more — then export any number of records as JSON or CSV. Includes ready-made presets for common schemas like User, Product, Order, Employee, and Address.

Key features

Work with Demo Data Generator
Supports the common formats, options, and data patterns developers expect for this task.
Designed for quick copy, paste, inspect, and export workflows.
Work with demo data, mock data, fake data, test data

Common use cases

Debug data, text, configuration, or code snippets during development.
Prepare clean examples for documentation, tests, tickets, and API debugging.

Frequently asked questions

Is this tool safe for private data?

The tool runs in your browser and is designed for local processing instead of sending pasted content to an application server.

Is this tool free to use?

Yes. Toolfy tools are free online utilities for everyday developer workflows.

UUID Generator

Generate RFC-compliant UUIDs. Supports UUID v4 (random, cryptographically secure via Web Crypto API), UUID v7 (time-ordered with millisecond timestamp prefix for sortable IDs), and Nil UUID. Generate up to 100 UUIDs at once.

Password Generator

Generate strong, cryptographically random passwords with customizable length, character sets (uppercase, lowercase, digits, symbols), and minimum character requirements. Copy instantly or generate multiple passwords for bulk use.

Lorem Ipsum Generator

Generate classic Lorem Ipsum placeholder text in paragraphs, sentences, or words. Instantly fill mockups, wireframes, and design prototypes with realistic-looking filler content of any length.

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 cryptographic hashes from any input text. Useful for verifying file integrity, storing passwords, generating checksums, and debugging authentication systems.