UUID Generator

Web & Dev Client-Side Privacy

Generate v4 UUIDs in bulk with copy-to-clipboard and format options.

How to Use UUID Generator

Follow this simple step-by-step guide to get the most out of our free online UUID Generator:

  1. 1
    Set how many identifiers you want in the Count field, which accepts 1 through 1000.
  2. 2
    Tick Uppercase to return the hex in capitals, and untick Hyphens to strip the dashes.
  3. 3
    Press Generate to produce a fresh batch, or press Enter while the Count field is focused.
  4. 4
    Use Copy All for the whole list, or the small copy control on any single row.

Key Features & Capabilities

Zero Uploads

Execution occurs 100% locally in your browser memory for maximum privacy.

Instant Latency

Zero network lag or server queues — get results instantaneously as you type.

Quick Export

One-click copy to clipboard or instant file download options built right in.

Technical Specifications & Privacy Guarantee

At utilitiestools.net, privacy and data security are core design principles. When using UUID Generator, your inputs are parsed and processed locally via client-side JavaScript execution engine. No plain text, uploaded media, or API tokens are transmitted over the internet or logged into remote server infrastructure.

Common Practical Use Cases

  • Database Seeding: generate 200 identifiers at once to populate primary keys in a fixtures file.
  • Test Automation: produce a hyphen-free identifier to use as a unique tenant name in an end-to-end run.
  • Distributed Systems: mint a correlation id to attach to a request while tracing it across services.
  • Mobile Development: copy a single uppercase UUID for an iOS bundle or provisioning identifier field.

Frequently Asked Questions

They come from crypto.randomUUID, the browser's cryptographically secure version 4 generator. A Math.random-based fallback is used only if that API is unavailable in the browser.