Local In-Browser Processing

RFC 4122 Version 4 UUID Generator

Generate batches of standard RFC 4122 version 4 UUID identifiers in your browser for software development, database seeding, and mock testing.

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How to use UUID Generator

1
Select the number of UUIDs you wish to generate (from 1 to 50).
2
Click Generate UUID to produce a fresh batch of RFC 4122 v4 identifiers.
3
Click Copy to transfer the newline-separated UUID list to your clipboard.

Capabilities

Generates standard RFC 4122 Version 4 (8-4-4-4-12) formatted UUIDs
Batch generation of up to 50 identifiers simultaneously
Suitable for database mock seeding, testing fixtures, and UI keys
Fast client-side generation in browser memory

RFC 4122 Version 4 UUID Generator for Development & Testing

A Universally Unique Identifier (UUID), also known in Microsoft environments as a Globally Unique Identifier (GUID), is a 128-bit identifier standardized under RFC 4122. Version 4 UUIDs are formatted into five hyphen-separated groups of hexadecimal characters: 8-4-4-4-12 (for example, c9a646d3-9c61-4cc9-bc84-b00f162d69f9).

WebTorq's UUID Generator enables engineers to create single or bulk batches of v4 UUIDs directly inside the browser. It is ideal for populating mock databases, writing unit test fixtures, and generating unique keys for frontend state management.

Technical Structure of a Version 4 UUID

128-Bit Representation

32 hexadecimal characters plus 4 hyphens create a distinct 36-character string with negligible probability of duplication across test environments.

Bulk Batch Generation

Generate up to 50 UUIDs simultaneously with newline separation for straightforward copy-paste into CSV seed files or test fixtures.

Format Compliant

Fully compatible with PostgreSQL uuid columns, MongoDB string IDs, and ORM entity keys.

Related Identification Utilities

Verify existing UUID strings with our UUID Validator.
Generate cryptographic SHA-256 signatures with the SHA-256 Generator.
Decode JSON Web Tokens using our client-side JWT Decoder.

Privacy & Processing

This tool operates in a sandbox directly inside your web browser. All parsing, processing, and downloads are rendered locally. Your file size, metadata, and contents never cross the network. It works completely offline.

Frequently Asked Questions

What version of UUID does this generator create?

This generator produces Version 4 (v4) Universally Unique Identifiers following the standard 8-4-4-4-12 hexadecimal character format.

How are UUIDs generated by this browser tool?

UUIDs are generated client-side using JavaScript pseudo-random number generation. They follow standard RFC 4122 v4 structure with hyphens separating 32 hexadecimal characters.

Should these UUIDs be used as cryptographic keys or production security tokens?

No. Because the generator utilizes standard pseudo-random number generation (Math.random) rather than cryptographically secure hardware RNG, these identifiers are intended for development testing, database mock seeding, and UI prototyping rather than cryptographic session tokens.

Can I generate multiple UUIDs at once?

Yes. You can select the number of UUIDs to generate in a single batch (from 1 to 50) and copy the entire list with one click.

How do I verify if a string is a valid UUID?

Use our companion UUID Validator tool to test whether any given string conforms to standard RFC 4122 UUID formatting.

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