Generate random UUID v4 identifiers, one at a time or in bulk.
UUID v4 identifiers are generated from 122 random bits, so collisions are astronomically unlikely — the same guarantee databases and distributed systems rely on worldwide.
Using the browser's built-in crypto.randomUUID(), a cryptographically secure random number generator — not a weaker Math.random()-based fallback.
Yes, UUID v4 is commonly used as a primary key, especially in distributed systems where auto-increment IDs would collide across servers.
v4 is fully random; other versions (v1, v5, v7) incorporate timestamps or namespace hashing. This tool generates v4, the most common general-purpose choice.