Random UUID

What Random UUID does

RFC UUID v4; also dashed-free hex and version.

The interactive controls for Random UUID load after this article so crawlers still read the instructions. Path /crypto/random-uuid is the canonical address. Work happens on this device; Tool-You does not take a copy of the file or pasted text for Random UUID.

How to use Random UUID

1. Keep this tab on Random UUID (/crypto/random-uuid). Pasting into the wrong Crypto tool (for example Random Hex) changes the job.
2. Paste or type the input Random UUID expects. Path hint: crypto · random uuid. Random UUID v4 with hex form.
3. Apply the Random UUID action only. Random Base64 is a different transform (Random bytes as Base64.). RFC UUID v4; also dashed-free hex and version.
4. Copy the output of Random UUID if you need it elsewhere. Size/complexity still follows: Uses secure random.
5. If the text job is actually Cryptographic random hex; count and uppercase., leave Random UUID and open Random Hex.

When not to use Random UUID

Skip Random UUID when a neighbor tool matches better — start with Random Hex or Random Base64 — or when the description already warns the job will fail. In the tool’s own words: RFC UUID v4; also dashed-free hex and version.

Questions about Random UUID

What does Random UUID do that other Crypto pages on this site do not?

RFC UUID v4; also dashed-free hex and version. Short version: Random UUID v4 with hex form.

Does Random UUID upload my file or text to Tool-You servers?

No. Random UUID runs in this browser tab. Files stay on the device. Limit note: Uses secure random.

Should I use Random Hex instead of Random UUID?

Use Random UUID when you need Random UUID v4 with hex form. Use Random Hex when you need Cryptographic random hex; count and uppercase. They share a category (Crypto) but not the same job.

What are the limits of Random UUID?

Uses secure random. Also: RFC UUID v4; also dashed-free hex and version.