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  3. UUID Generator

UUID (v4) Generator

Instantly generate cryptographically secure Version 4 UUIDs natively in your browser. Fast, free, and built for developers.

How It Works

1

Select Quantity

Use the slider or input field to choose how many UUIDs you want to generate (up to 10,000).

2

Generate Instantly

Click 'Generate New' to create a fresh batch right in your browser.

3

Copy to Clipboard

Use the 'Copy All' button to instantly grab all generated UUIDs.

4

Download TXT

For large batches, download the UUIDs directly to a text file.

Generate UUIDs (v4) in Your Browser

A UUID (Universally Unique Identifier) is a 128-bit value used as a unique ID in databases, APIs, and distributed systems. Our free UUID Generator creates version 4 (random) UUIDs in your browser using crypto.randomUUID(). Generate one or thousands; copy or download as text. Nothing is sent to any server.

Why UUID v4?

Version 4 UUIDs are random and have a negligible chance of collision, so they are ideal for primary keys, request IDs, and any place you need a globally unique identifier without coordinating with a central authority.

Privacy and security

Generation is 100% client-side. We do not store or log any generated UUIDs. For high-volume or sensitive use, you can generate batches and download them as a file without any data leaving your device.

Frequently Asked Questions

What is a UUID?

A UUID (Universally Unique Identifier), also known as a GUID (Globally Unique Identifier), is a 128-bit label used for information in computer systems. Version 4 UUIDs are randomly generated and have an extremely low probability of collision.

Is this tool secure? Are UUIDs saved?

Yes! All UUIDs are generated 100% locally in your browser using the crypto.randomUUID() API for cryptographic randomness. We do not store, log, or transmit the generated UUIDs to any database or server.

What version of UUID does this tool generate?

This tool generates Version 4 UUIDs. A v4 UUID is generated from truly random or pseudo-random numbers, making it the most common and widely utilized version across software development.

Can I generate multiple UUIDs at once?

Absolutely. You can use the quantity slider or input box to generate up to 10,000 UUIDs instantly. You can then copy the entire list or download it directly as a text file.

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