Skip to content
Aadi Maanav

UUID Generator

Generate cryptographically random v4 UUIDs in bulk, with copy and formatting options.

100% Free
All tools are free to use
Instant Process
Get results in seconds
Browser-Based
Files never leave your device
Privacy First
No uploads, 100% safe

About UUID Generator

Generate random version-4 UUIDs (GUIDs) using your browser's cryptographically secure random source. Create up to 1000 at once, toggle uppercase or hyphen-free formats, and copy individually or all together.

How to use

  1. 1

    Set how many UUIDs you need.

  2. 2

    Optionally switch on uppercase or turn off hyphens.

  3. 3

    Click Generate.

  4. 4

    Copy a single UUID or all of them at once.

Tip: All processing is performed locally in your browser with zero loss in quality and no upload limits.

Frequently Asked Questions

Yes. They use crypto.randomUUID (or the Web Crypto random source), which is cryptographically strong — not Math.random.

All processing happens locally in your browser. Your files are never uploaded anywhere.

More Developer Tools You Might Like

Base64 Encode / Decode

Encode text to Base64 or decode Base64 back to text, instantly and privately.

Color Converter

Convert colors between HEX, RGB and HSL with a live preview and channel sliders.

Hash Generator

Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from any text, instantly.

HTML / CSS / JS Minifier

Minify HTML, CSS or JavaScript by stripping comments and whitespace, with size savings shown.

JSON Formatter

Format, validate and minify JSON instantly — paste in, get clean output, copy with one click.

Browse all 150+ free tools