Generate cryptographically random UUID v4 or sortable ULID identifiers.
Pick a type and count, click Generate. Identifiers use the browser's crypto API.
UUID v4 is a 128-bit random identifier per RFC 4122. ULID is a 26-character Crockford base32 identifier with a 48-bit timestamp prefix, making it lexicographically sortable by creation time. Both are generated using crypto.getRandomValues / crypto.randomUUID — locally, in your browser.
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