UUID Validator
Validate UUID strings and detect versions. Free, private, and local-first.
Use UUID Validator
Validate UUID strings and identify UUID versions.
Total
2
Valid
1
Invalid
1
VALID v4 550e8400-e29b-41d4-a716-446655440000 INVALID - not-a-uuid
Quick answer
UUID Validator is a free online tool that helps you validate UUID strings and detect versions. It runs in your browser, so you can work with development data, text, files, or generated output without creating an account.
About UUID Validator
UUID Validator helps you validate UUID strings and detect versions. It is designed for focused local-first workflows where you need a quick result without creating an account or sending your input to a server.
Common uses include validating database ids, checking mock data quality, reviewing api response identifiers.
Use the examples, usage notes, FAQ, and related tools below when you need to compare formats, build sample data, validate inputs, or move into the next step of the same workflow.
What this tool does
How to use UUID Validator
- 1
Paste UUID or GUID values into the input area.
- 2
Review valid, invalid, and version counts.
- 3
Check individual validation results.
- 4
Copy results for QA notes or test logs.
Examples
Valid UUID v4
550e8400-e29b-41d4-a716-446655440000
Invalid
not-a-uuid
Use cases
- Validating database IDs
- Checking mock data quality
- Reviewing API response identifiers
- Testing GUID input validation
Related workflow
After using UUID Validator, many workflows continue with related tools for validation, conversion, cleanup, mock data, or final export.
Privacy and usage notes
CodeVella tools are designed to run locally in your browser. Your input is not uploaded to a server, and no account is required.
Generated test data is intended for development, QA, demos, and safe internal workflows.
Frequently asked questions
Is my data uploaded?+
No. This tool is designed to run locally in your browser.
Do I need an account?+
No signup is required for CodeVella tools.
Which UUID versions can this validate?+
It validates canonical UUID strings for versions 1 through 5 and identifies the version when the string is valid.