UUID, token & API key generator, forged in your browser.

UUID v4 identifiers, cryptographically-random hex and Base64URL tokens, and alphanumeric API keys, one or up to fifty at a time.

Pick UUID v4 as the type, choose how many you need, and hit Generate. Each identifier comes from crypto.randomUUID — an RFC 4122 version-4 UUID — and you can copy one or all of them with a click.

Choose a hex or Base64URL token, or an alphanumeric key, set the length, and optionally add a prefix like sk_live_ to match your provider's format. Generate up to fifty at once — handy for seeding environments or rotating secrets.

No. Everything is generated in your browser with the Web Crypto API. Nothing is uploaded, logged, or transmitted, so no server ever sees what you make.

Yes. Tokens come from crypto.getRandomValues (and crypto.randomUUID for UUIDs), unbiased and generated locally. Because they never leave your device, they're suitable for session secrets, signing keys, and API keys.

Yes. Set an optional prefix and it's prepended to each generated key, handy for matching a provider's key format.

Yes. Generate as much as you like, with no sign-in and no quota.