Inspect UUID text for its version, variant, nil and max values.
Type or paste on the left — the result updates as you type.
Requires canonical 8-4-4-4-12 hexadecimal syntax. Non-RFC variants have a null version; inspection does not prove uniqueness, randomness or authenticity.
Up to 100,000 UTF-16 units per input and 1,000,000 per result. See the supported formats and examples below.
Tool page updated: 2026-09-27
