UUID Generator

Generate random UUIDs (v4) in bulk. Choose uppercase, hyphens, or braces. Free, instant, in your browser.

Browser Processing Only (Offline Ready)
1

Enter your text

Paste or type your content into the input field.

2

Adjust settings

Configure options to get the result you want.

3

Copy or save

Copy the output to clipboard or save it.

Key Features

Instant Bulk Generation

Create a single UUID or thousands at once. Output updates the moment you change any option.

Cryptographically Secure

UUIDs come from the Web Crypto random generator, not a weak pseudo-random source.

Flexible Formatting

Toggle uppercase, strip hyphens, or wrap each value in braces to match your codebase.

100% Local

Generation happens entirely in your browser. No UUID is ever sent to a server.

About This Tool

What is the UUID Generator?

The UUID Generator creates random version 4 UUIDs (also known as GUIDs) directly in your browser. A UUID is a 128-bit identifier that is unique enough to be used as a database key, request ID, or file name without coordination between systems.

Common Uses

  • Database keys: Primary keys that don't reveal row counts or order.
  • API request IDs: Trace requests across distributed services.
  • File and resource names: Avoid name collisions when uploading.
  • Test data: Seed fixtures with realistic unique values.

Privacy-First by Design

Every UUID is generated locally using the Web Crypto API. Nothing is transmitted, logged, or stored on any server — the tool even works offline once loaded.

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FAQ

A UUID (Universally Unique Identifier), also called a GUID, is a 128-bit value used to uniquely identify information. This tool generates version 4 UUIDs, which are based on random numbers.
Yes. They are generated with the browser's cryptographically secure random number generator (Web Crypto), so collisions are practically impossible.
No. All processing happens entirely in your browser. Your data never leaves your device — nothing is uploaded to any server.
Yes. Once the page has loaded, the tool works completely offline. For the best experience, install PrivaDeck as a PWA from your browser.