Tools / Developer / UUID Generator
Client-side

UUID Generator

Generate UUID v4 (random) or v7 (time-sorted) identifiers in single or batch mode, backed by WebAssembly entropy in your browser.

What it does

  • UUID v4 (random) and v7 (millisecond-prefixed, time-sorted)
  • Single or batch generation up to 1000 at a time
  • One-click copy of all results
  • Entropy never leaves the browser

Why prefer UUID v7 over v4 for a database primary key? Version 7 embeds a millisecond timestamp in the most-significant bits, so rows insert in time-sorted order and avoid index fragmentation — generate either variant here using Wasm-backed entropy.