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UUID Validator

Checks UUID strings and detects versions when possible. It is for validating IDs copied from logs, databases, APIs, and test fixtures.

Processing

Runs in your browser. Input, settings, and results are not sent to Utilio servers.

How Utilio handles dataHow browser-local processing worksPrivacy Policy

UUID Validator

Local browser processing. Data stays on this device.

Looks valid

UUID version 4, RFC variant 9.

The 36-character UUID passed the basic format check. Version and variant are shown in the stats.

Version
4
Variant
9
Bits
128

What to open next

Related tools and guides for the same job.

JSON ValidatorCatch missing commas, trailing commas, and broken strings.JSON FormatterPretty-print a compact API response before reading it.YAML to JSONConvert YAML config fragments into JSON for scripts.DNS LookupCheck whether a domain points to the expected host.Cron ParserVerify a cron expression before deploying a scheduled task.JSON to YAMLMove API examples into YAML documentation.

What UUID Validator does

Use UUID Validator when you need to check whether an ID is a valid UUID before using it in a request.

When to use it

  • Check whether an ID is a valid UUID before using it in a request.
  • Detect UUID version and formatting issues.
  • Clean copied IDs that may include spaces or missing hyphens.

How to use it

  1. Paste the UUID value.
  2. Read validity, version, and formatting feedback.
  3. Copy the corrected value if the format is acceptable.

What to check

  • A valid UUID only proves format, not that the record exists.
  • Check database or API ownership separately.

Data, formats, and limits

What stays on your device and what is sent

Runs in your browser. Input, settings, and results are not sent to Utilio servers.

Supported formats

This tool works with typed or generated values rather than uploaded files.

File limits and browser requirements

  • Use an up-to-date browser and check the result on the device where you will use it.

Known limits

  • This tool helps inspect or transform data, but it does not replace code review, security review, or production configuration checks.
  • Do not paste real secrets, tokens, or private keys into data you are not prepared to expose in the browser.

Troubleshooting

  • If validation fails, start with quotes, commas, brackets, whitespace, and input encoding.
  • If the result is unexpectedly empty, check the tool mode and a minimal example without extra fields.
  • Do not paste real tokens, passwords, or keys; use a test snippet with the same format for diagnosis.
All developer toolsPrivacy PolicyHow Utilio handles data

Common questions

What does Utilio receive?

Runs in your browser. Input, settings, and results are not sent to Utilio servers.

What is it useful for?

Use it when you need to check whether an ID is a valid UUID before using it in a request. Start by pasting the UUID value.

Do I need an account?

No. You can use this tool without creating an account.

Can I use it on a phone?

Yes. The tool works in a mobile browser, though longer input or detailed results may be easier to review on a larger screen.

How do I get a reliable result?

Paste the UUID value. Then read validity, version, and formatting feedback. A valid UUID only proves format, not that the record exists.

Does Utilio use my input or results to train AI?

No. Utilio does not use files, pasted text, settings, generated values, or results from this tool to train AI models.