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UUID v4 & Password Generator

Generate cryptographically secure bulk UUID v4 identifiers and high-entropy random passwords client-side using the Web Cryptography API.

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How to use this tool

  1. Select your target mode: Bulk UUID v4 or Secure Password Generator.

  2. For UUIDs: pick quantity (1 to 50), toggle uppercase/lowercase, hyphens, and braces.

  3. For Passwords: slide the length (8 to 64 chars) and choose allowed character sets (symbols, numbers, ambiguous characters).

  4. Click 'Copy' next to any individual item, or 'Copy All' to copy the entire batch to your clipboard.

  5. Click 'Download as .txt' to export your generated credentials safely to a local file.

Frequently asked questions

Quick answers about file privacy, processing modes, formats, and device support.

Yes. They are generated using the Web Cryptography API (crypto.randomUUID and crypto.getRandomValues), strictly adhering to RFC4122 Version 4 standards. The probability of generating duplicate UUID v4 identifiers is approximately 1 in 2.7 quintillion, making collisions practically impossible.
Yes. Passwords utilize a CSPRNG (Cryptographically Secure Pseudorandom Number Generator) with uniform character distribution and entropy up to 256+ bits, making them resilient against offline brute-force and rainbow table attacks.
Ambiguous characters are letters and numbers that look visually similar in certain fonts (such as 0 and O, 1, l, and I). Excluding them prevents transcription and typing mistakes when sharing or manually entering passwords.
Yes! The formatting options allow you to toggle UPPERCASE, remove hyphens, or wrap identifiers in standard curly braces ({...}) for registry and Windows GUID formatting.
Never. Generation happens exclusively in your browser's temporary memory via native client-side cryptography. No credentials ever touch a server, log, or database.

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