RFC 9562 • RFC 4122 StandardWeb Crypto CSPRNG

Bulk UUID & NanoID Generatorv4, v7, Nil

Generate single or batch cryptographically secure UUIDs (v4 random, v7 time-ordered) and NanoIDs with custom casing, delimiters, and enclosing wrappers. 100% computed in-browser.

Generation Controls

Identifier TypeRFC 4122 Random

Quantity (Batch Count)10 identifiers

Casing

Hyphens

Wrap / Enclosing

Prefix (Optional)

Suffix (Optional)

Batch Output Format

Generated Results0 IDs

No IDs generated yet

Click “Generate New” or choose a preset to begin.

122 bits of cryptographic entropy (1 collision in 100 quintillion)

RFC compliant • 0 server packets

Developer Reference: UUID v4 vs UUID v7 vs NanoID

UUID Version 4

RFC 4122

Purely random 128-bit numbers. Provides maximum entropy and unpredictability. Suitable for security tokens, temporary files, and decoupled distributed systems where insertion order is irrelevant.

UUID Version 7

RFC 9562

Unix millisecond timestamp ordered identifier. Solves B-Tree index page splitting in PostgreSQL, MySQL, and MongoDB. Maximizes cache locality and sequential write performance.

NanoID

URL-Safe

Compact 21-character string using a 64-character alphabet. Ideal for short URLs, public object IDs (e.g. Stripe/GitHub style), web sharing, and human-readable links with zero hyphen friction.

100% Client-Side Privacy Guarantee: All identifiers are generated locally via the browser's Web Cryptography API (crypto.getRandomValues). No data or tokens are ever sent to external servers.

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