Can the UUIDs collide?

v4 packs 122 random bits, so collisions are negligible in practice and safe as unique IDs.

Are they generated locally?

Yes, via the browser's crypto.randomUUID, with no network and no logging.

Are my files or data uploaded?

No. Everything runs locally in your browser with no network upload, and is discarded when you close the page.

Do I need to sign up or pay?

No. The site is completely free, needs no account and has no usage limits.

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🆔UUID Generator - Generate UUID v4 Online in Bulk

Generate UUID (universally unique identifier) v4 in bulk for database keys, request IDs, file names and more. Created locally with the browser cryptographic RNG (crypto.randomUUID) per RFC 4122. Options for uppercase, hyphen removal and braces; up to 100 at a time.

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How to use UUID Generator

1Drag the slider to choose how many
2Optionally toggle uppercase, no hyphens or braces
3Click Copy all, or Regenerate for a new batch

FAQ

Can the UUIDs collide?: v4 packs 122 random bits, so collisions are negligible in practice and safe as unique IDs.
Are they generated locally?: Yes, via the browser's crypto.randomUUID, with no network and no logging.
Are my files or data uploaded?: No. Everything runs locally in your browser with no network upload, and is discarded when you close the page.
Do I need to sign up or pay?: No. The site is completely free, needs no account and has no usage limits.