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UUID generator

Generate an ID for a record, project, or test item.

RUNS IN YOUR BROWSER

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The preview shows up to 100 rows. Copy all and Download text keep the full batch. Exports are plain text, so store them carefully.

◈ Runs in your browser◎ No account needed↗ Copy when you’re ready
QUICK START

A UUID is a long identifier written as groups of letters and numbers separated by hyphens. Some apps ask you to provide one.

  1. Leave version 4 selected unless your software asks for another version.
  2. Choose how many IDs you need and generate them.
  3. Use Copy for a single ID. For a batch, use a numbered Copy button for one row or Download text for the full list.

A UUID labels a record; it is not a password or access key. Versions 1 and 7 also reveal time information.

How it works

Pick an identifier version deliberately

Version 4 uses random bits. Version 1 contains a timestamp and uses a freshly randomized node and clock sequence here, never your device MAC address. Version 7 contains Unix-time information and random data. The locally bundled uuid package supplies the RFC 9562 algorithms.

Version 1 and 7 reveal time information and are not interchangeable with opaque secrets. UUIDs identify records; they are not passwords or authorization tokens. Collisions are possible, so a database still needs its own uniqueness handling. Exports retain all requested identifiers, one per line.

What happens to your input?

This tool does its work on this page. The site does not submit your entries or results or keep a history. However, any script allowed to run on the page could read its fields. Clearing the tool or leaving the page cannot erase clipboard entries, downloads, printouts, or screenshots. It also cannot protect you if your browser or device is compromised. Read the privacy limits.

Keeping a result safe after generation →