UUID / ULID Generator help

Make identifiers with the browser's crypto API, one or hundreds at a time, and read back what an id contains.

Types

• UUID v4 — fully random. The safe default.
• UUID v7 — the leading bits are a millisecond timestamp, so ids sort by creation time.
• ULID — 26 Crockford base32 characters, also time-sortable, no dashes.
• NanoID — short and URL-safe, 21 characters by default.

Steps

1. Pick a type and a count, then Generate.
2. Copy one, Copy all, or Save as a .txt.
3. Paste any id into Inspect to see its type, and for v7 and ULID the time it encodes.

Notes

• Randomness comes from crypto.getRandomValues, the same source the platform uses for keys.
• Nothing is generated on or sent to a server.

Everything runs in your browser. Nothing you enter or drop is uploaded.