// generators
UUID Generator.
Generate UUIDs locally using crypto.getRandomValues and crypto.randomUUID. Bulk modes, hyphenation, and uppercase.
Client-sidecrypto.randomUUIDNo upload
UUIDs
FAQ
Are UUIDs cryptographically random?
UUID v4 and v7 use crypto.getRandomValues (or crypto.randomUUID), which is cryptographically secure on all modern browsers.
Should I use v4 or v7?
v4 is the most universally supported. v7 is time-ordered and gains adoption in databases where monotonic IDs are useful.
Are these IDs unique?
For practical purposes, yes. The collision probability for v4 is astronomically low even at scale.