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Developer Tools

UUID Generator

Generate Version 1 and Version 4 UUIDs (Universally Unique Identifiers).

Free · No sign‑up Added Jun 2026

About UUID Generator

A UUID is a 128-bit identifier written as 36 characters, such as 123e4567-e89b-42d3-a456-426614174000. It is designed to be unique without a central authority, which makes it useful for database keys, file names, request IDs and test data. This tool generates up to 50 at a time.

Choose the version. Version 4 is completely random and is the usual choice. Version 7 starts with the current time in milliseconds, so the IDs sort in the order they were created, which keeps database indexes tidier. Version 1 is based on a timestamp and is generated with a library loaded from a CDN.

Version 4 and 7 are made in your browser with its secure random number generator. Two version 7 IDs made in the same millisecond are not guaranteed to be in order. A UUID is an identifier, not a secret, so do not use one as a password or access token.

Who uses it and when

Database keys

Create unique IDs for rows.

Test data

Generate a batch of IDs for fixtures.

Request and file IDs

Give logs, uploads or events a unique name.

Sortable IDs

Use version 7 when you want IDs to follow creation order.

Why use this UUID Generator

Generate v4, v7 and v1 UUIDs in bulk.

Three versions

Random (v4), time-ordered (v7) and timestamp (v1).

Up to 50 at once

One per line, ready to copy.

Secure randomness

Uses your browser's crypto random numbers.

How it works

Choose a version

Version 4 is the default.

Set how many

From 1 to 50.

Generate and copy

Copy the list.

Frequently asked questions

Which UUID version should I use?

Use version 4 for random IDs. Use version 7 if you want them to sort by creation time.

Can two UUIDs be the same?

It is astronomically unlikely, so they are treated as unique.

Are UUIDs secret?

No. Do not use them as passwords or tokens.

Are they sent to a server?

No. They are created in your browser.

Developer Tools

CSS Minifier

Overview

What Is UUID Generator?

Generate Version 1 and Version 4 UUIDs (Universally Unique Identifiers).

User Guide

How To Use UUID Generator

  1. 1 Open the UUID Generator interface in your desktop or mobile browser.
  2. 2 Input or upload your source data, file, or parameters into the designated workspace fields.
  3. 3 Adjust any optional configuration settings or conversion toggles according to your requirements.
  4. 4 Click the primary action button to generate your output instantly.
  5. 5 Copy the resulting text, code snippet, or formatted file directly to your clipboard or local device.
Capabilities

Key Features of UUID Generator

100% Free & Unlimited Usage

No registration, subscriptions, or hidden limits. Process as many files or items as you need.

Privacy-Focused Processing

All operations execute locally in your client web browser. Your sensitive files and data never touch external servers.

Cross-Platform Compatibility

Fully responsive design optimized for desktop workstations, laptops, tablets, and smartphone displays.

Instant Real-Time Output

Zero server queuing delays. Results are calculated and rendered immediately upon user input.

Client-Side Privacy & Security Guarantee

Your privacy is our priority. UUID Generator executes processing entirely within your browser environment. Your input data, text, files, and credentials are never transmitted to external servers or stored in remote databases.

FAQ

Frequently Asked Questions

What is UUID Generator?
Generate Version 1 and Version 4 UUIDs (Universally Unique Identifiers).
Is UUID Generator free to use?
Yes, UUID Generator is completely free. There are no hidden charges, no subscription, and no credit card required. Just open the tool and start using it instantly.
Do I need to create an account to use UUID Generator?
No account or signup is required. You can use UUID Generator immediately without registering. Just visit the page and the tool is ready to use.
Does UUID Generator work on mobile and tablet?
Yes, UUID Generator is fully responsive and works on all modern devices including smartphones, tablets, and desktops. Any up-to-date browser is supported.
Does UUID Generator process my data on a server?
No. UUID Generator runs entirely in your browser using JavaScript. Your code and data are never sent to or stored on any server, keeping your work private and secure.
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