Generators Tools

Generators produce values on demand: universally unique identifiers (UUID and ULID), secure passwords and tokens, QR codes, MAC addresses and random ports. They are the tools you use to seed data, create secrets and produce test fixtures.

UUID Generator

Generate one or many random version-4 UUIDs instantly.

Password Generator

Generate strong, random passwords with custom rules.

Random Token Generator

Generate secure random tokens and API keys with custom length and charset.

QR Code Generator

Create a QR code from any text or URL and download it.

MAC Address Generator

Generate random MAC addresses in your preferred format.

ULID Generator

Generate sortable, timestamp-based ULIDs.

Random Port Generator

Generate random TCP/UDP port numbers outside the reserved range.

Mock Data Generator

Generate realistic fake data as JSON or CSV for testing.

About Generators tools

What unites these tools is that the quality of the randomness matters. A predictable token or password is a security hole, so every generator here that produces a secret uses the browser’s cryptographically secure random source rather than weak pseudo-randomness. Everything is generated locally and exists only in your browser until you copy it — nothing is logged or transmitted. Use them to create API keys, seed a database with realistic identifiers, produce a QR code for a link, or grab a free port for a dev server, all without leaving the page.

Other categories

Converters Crypto & Security Web Text Reference