Helpful information

UUID v4 is a widely used 36-character standard identifier. NanoID is a shorter random ID designed for URLs. Both work well for database keys, temporary tokens, and test data.

Generated data never leaves your device. Processing uses your local computer only.

Random values are generated on your device with the browser's Crypto API. Nothing is sent to the MISCLAND server.

Q. Can I use these as passwords?

These values can serve as temporary random strings, but a dedicated password generator with security-specific options is a better choice for account passwords.

Q. Can UUID v4 values collide?

A collision is theoretically possible but extremely unlikely. In production databases, use a unique constraint as the final safeguard.

Q. What NanoID length should I use?

A length of 21 characters is common. Shorter IDs have a higher probability of collision.

Q. Are these safe to use in a URL?

NanoID and Base64URL modes use only URL-safe characters, making them suitable for paths and query parameters.

Test data: Generate batches for sample database keys or dummy user IDs.

Validation: Test UUID patterns directly in the Regex Tester.

Token testing: Use them to test identifiers such as the jti claim in a JWT.

Integrity identifiers: Pair them with file hashes to manage release and build identifiers.

No. The standard UUID mode currently generates random UUID v4 only. UUID v1, UUID v7, ULID, CUID, and other identifier formats are not supported; NanoID, HEX, and Base64URL are provided as separate random ID modes.

NanoID mode defaults to 21 characters and supports lengths from 4 to 256. The generated body uses 0-9 A-Z _ a-z - as its 64 URL-safe characters and uses browser crypto.getRandomValues() for randomness. If you add a prefix, the final string is longer than the configured body length by the prefix length.

UUID / NanoID Generator - Bulk UUID v4 & Random IDs

Generated values

Helpful information

What is the difference between UUID and NanoID?

Where are generated values processed?

Frequently asked questions (FAQ)

Tips

Can this UUID Generator create UUID v7 or ULID?

How are NanoID length and characters chosen?