UUID Generator

What is the UUID Generator?

It is a browser-first UUID generator that outputs RFC 4122 v4 identifiers you can drop into databases, API payloads, or infrastructure scripts without installing CLI utilities.

Key Features

RFC 4122 compliant randomness powered by the Web Crypto API.

Generate up to 100 unique identifiers per click for bulk workflows.

Formatting toggles for uppercase output, hyphen removal, and optional braces.

Runs entirely in the browser so secrets and internal IDs stay private.

How to Use

Set the quantity between 1 and 100 to control how many UUIDs the tool should return.

Toggle uppercase, hyphen, or brace options to match the format your platform expects.

Click Run Tool to generate the batch instantly using secure random bytes.

Copy the UUID list and paste it into your environment variables, database seeds, or QA scripts.

Common Mistakes to Avoid

Leaving the quantity at zero or blank, which produces a validation error. Always request at least one UUID.

Removing hyphens when a downstream system expects the canonical 8-4-4-4-12 format.

Mixing uppercase and lowercase in the same batch, which can confuse case-sensitive comparisons. Use the uppercase toggle for consistent casing.

Examples

Provision 25 UUIDs to pre-populate IDs in a staging database seeder.

Generate uppercase, brace-wrapped identifiers for inserting into JSON schemas or config files.

Quickly mint a single UUID when you need to label a support ticket, Git branch, or S3 object.

FAQ

Are the UUIDs compliant with RFC 4122?

Yes. We rely on the browser's Web Crypto API to produce version 4 UUIDs with the correct variant and version bits, matching the RFC 4122 specification.

How many UUIDs can I generate at once?

You can create between 1 and 100 identifiers per run. Adjust the quantity field to match your batch needs.

Is any of my input data uploaded?

No. All randomness and formatting happens locally in your browser, so nothing is transmitted anywhere.