UUID Validator
Check UUID text shape, RFC variant and version, including Nil and Max special identifiers.
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How to use UUID Validator
Inspect one identifier or a line-separated list before an import. The checker normalizes casing and accepts the UUID URN prefix, while distinguishing structural validity from actual uniqueness.
- Enter canonical hyphenated UUIDs, one per line.
- Select Run tool to report shape, version, and variant compatibility.
- Review the result, then copy it or download the generated file.
Good to know
- Up to 1,000 identifiers and 50,000 characters. Supports RFC versions 1–8, Nil, and Max; braces and compact unhyphenated strings are not accepted.
- A valid shape does not establish uniqueness, origin, authenticity, or whether an application has issued the identifier.
Common questions
Are uppercase UUIDs accepted?
Yes. UUID hexadecimal digits are case-insensitive and normalized to lowercase in the report.
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