1. Choose how many UUIDs you need
Use a single UUID for one identifier or generate a small list when you need mock rows, test records, or sample payload IDs.
Free UUID generator · security tool · browser-based
UUID Generator Online
Generate UUID v4 values for database records, API payloads, test fixtures, filenames, or mock data. Choose count and formatting options, then copy the result instantly.
Generator input options
Generated UUID
Generate UUID v4 values for identifiers, test records, database rows, or mock API payloads.
Ready. Generate one or more UUID values.
Generated in your browser. UUIDs are useful identifiers, but they should not be treated as passwords or secrets.
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ProcessingLocal browser
How to use the UUID generator
Generate one or more UUID values for development, test data, and structured records.
2. Select the output format
Keep hyphens for standard UUID formatting, or remove hyphens when a compact identifier is easier for your workflow.
3. Copy the generated values
Generate the UUIDs, then copy the result into your database seed, fixture, API test, or documentation example.
Common UUID use cases
UUIDs are helpful when records need unique-looking identifiers without relying on simple incremental numbers.
API and webhook examples
Use UUIDs in API samples, mock payloads, webhook events, and documentation where realistic identifiers make examples clearer.
Database and test records
Generate identifiers for development fixtures, seed data, staging rows, or local test records.
File and object identifiers
Use UUID-style values for mock object keys, logs, event records, or sample filenames that need a unique label.
UUID tips and limitations
UUIDs are convenient identifiers, but they should be used with the right expectations.
Do not use UUIDs as secrets
A UUID can identify an object, but it should not replace a password, private token, API key, or permission check.
Keep formatting consistent
Choose hyphenated or compact format based on your database, API, or project convention and keep it consistent.
Avoid unnecessary public exposure
Even though UUIDs are not passwords, avoid exposing sensitive internal object IDs publicly unless your app is designed for it.
UUID Generator FAQ
What is a UUID generator used for?
A UUID generator creates unique identifier values that are useful for database rows, API payloads, test records, filenames, logs, and other systems that need non-sequential IDs.
Does this UUID generator run in my browser?
Yes. The generator is designed to create UUID values locally in your browser without requiring a login or server-side account.
Are UUIDs the same as passwords?
No. UUIDs are identifiers, not secrets. Do not treat a UUID as a password, access token, encryption key, or authentication credential.
Can I generate multiple UUIDs at once?
Yes. Choose the UUID count in the options panel, then generate a list you can copy or use for testing and mock data.
Helpful UUID and identifier guides
Learn when to use UUIDs, how UUID v4 works, and how identifiers differ from passwords or secrets.
