txtnode

Bulk UUID
Generator.

Generate bulk, cryptographically secure Version 4 UUIDs and GUIDs. Fully customizable formatting in real-time, executing entirely on your device.

Web Crypto API Secure
Generated Keys (0)

Generation Controls

10
150100
Quotes wrapper
List separator

Understanding UUID v4 Specifications.

UUID Version 4 represents the pinnacle of distributed indexation. Unlike v1 (time-based) or v5 (namespace-hash), **v4 uses 100% random values** (except for 6 bits indicating version and variant). This ensures zero predictable links between records, making it ideal for distributed system databases, security tokens, and session keys.

Cryptographic Randomness

We leverage the browser's native `window.crypto.randomUUID()`. This API taps directly into your operating system's core entropy pool (system background noise), making the generated sequences far more robust than basic pseudo-random equations (`Math.random()`).

Collision Odds

The 128-bit structure yields roughly **340 undecillion** total possibilities. For standard enterprise microservices, generating billions of records across decentralized clusters will never result in duplicate identifiers.

Frequently Asked Questions.

What is a UUID or GUID?

A Universally Unique Identifier (UUID) or Globally Unique Identifier (GUID) is a 128-bit number used to identify information in computer systems. Standard UUIDs are formatted in five groups separated by hyphens (8-4-4-4-12 structure), totaling 36 characters.

How secure is this UUID generator?

Our tool is "Privacy-First." The generator executes entirely in your browser using the native Web Crypto API (window.crypto.randomUUID()). No ID lists are ever transmitted, processed, or saved by our servers. The random values generated are cryptographically secure.

What is the probability of a UUID collision?

The collision probability of Version 4 UUIDs is practically zero. With 122 bits of pure entropy, the number of possible combinations is 2^122 (about 5.3 undecillion IDs). To have a 50% chance of a single collision, you would need to generate 1 billion UUIDs per second for about 85 years.

What is the difference between uppercase and braces formatting?

While Unix and web environments (like JavaScript or Java) standardize on lowercase, hyphenated UUIDs, Microsoft environments (like Windows Registry or C# GUIDs) often require UPPERCASE letters wrapped inside braces, such as {550E8400-E29B-41D4-A716-446655440000}. Our tool provides instant toggles for both.