UUID Generator

Generate cryptographically random UUID v4 values — one or in bulk.

UUID Generator produces standards-compliant version 4 UUIDs using the browser's built-in crypto.randomUUID() function, which uses a cryptographically secure random number generator under the hood. Every UUID produced is globally unique with overwhelming statistical probability — the chance of a collision across all UUIDs ever generated is effectively zero. Developers reach for UUIDs as database primary keys, API request identifiers, idempotency keys, session tokens, feature flag names, and temporary file names. The bulk mode lets you generate up to 50 at once for seeding test databases, creating sample data, or prepping a list of identifiers for a batch operation. Toggle uppercase output for codebases that prefer that convention. Because generation happens entirely in your browser using a native API, there is no latency, no rate limit, and no privacy concern.

How UUID Generator works

UUID Generator is a free browser-based utility from Salah Tools Hub. It is designed to give you an immediate result without an account, subscription, or upload to a remote server.

Enter your information into the tool after the page loads, review the result, and use the available copy or download controls. Your input stays on your device while the tool is running.