UUID Generator

How to use UUID Generator

1. Open UUID Generator — it runs entirely in your browser with no setup.
2. Paste or type your input into the text area, or upload a file where supported.
3. Set any options you need. The result appears in the output panel — there is no upload step and no waiting on a server.
4. Review the output instantly; large inputs are handled locally without lag.
5. Copy the result to your clipboard or download it. Your data never leaves the page.

Why use UUID Generator?

• 100% free with no limits, no sign-up and no watermarks.
• Private by design — your data are processed in your browser and never uploaded to a server.
• Fast and lightweight, with instant results even on a phone or a slow connection.
• Works everywhere — any modern browser on Windows, macOS, Linux, Android or iOS.
• Part of a full generators suite, so related uuid tasks are one click away.

What people use UUID Generator for

• Creating a primary key for a record that must be unique across several databases or offline clients.
• Generating a correlation ID for tracing a request through a distributed system.
• Producing test identifiers in bulk without a server round trip.

UUID Generator: limits and things worth knowing

• Version 4 UUIDs are entirely random apart from six fixed bits identifying version and variant, leaving 122 random bits.
• Randomness comes from the browser's crypto API, so these are suitable for identifiers. They are not a substitute for a token or a secret — a UUID is designed to be unique, not unguessable in the security sense.
• UUID v4 values do not sort chronologically, which is why databases that index on them can fragment. Version 7, which is time-ordered, exists for that reason.
• The 36-character form includes four hyphens; the same value is often stored as 32 hex characters or as 16 raw bytes.

Sources

• RFC 4122 — A Universally Unique IDentifier (UUID) URN Namespace

Is it private and secure?

Your privacy is built in. UUID Generator runs completely on your device, so whatever you enter stays in your browser and is never transmitted, logged or stored on any server.

Network activity: none. Nothing is sent and nothing is fetched. This tool makes no network request at all once the page has loaded — which is why it keeps working if your connection drops.

You do not have to take that on trust — our privacy proof page publishes the Content-Security-Policy that enforces it, lists every third party it permits, and shows how to verify the whole claim yourself.

Learn more

Are Online Password Generators Safe? — A password generated on a server has been known to that server. Here's how to tell which generators are safe, and what actually makes a password strong.