UUID / GUID Generator
Generate cryptographically secure random UUID v4 and timestamp-based UUID v7 identifiers in bulk.
Batch workspace
Format multiple files locally in one run.
How to use the UUID Generator
Paste code or file
Paste your raw TEXT text or upload directly.
Configure options
Choose indentation, dialect, or formatting preferences.
Format & export
Click format, then copy, download, or inspect in tree view.
What is a UUID Generator?
Generate cryptographically secure random UUID v4 and timestamp-based UUID v7 identifiers in bulk. This tool re-indents and organizes code according to standard style conventions while checking for syntax validity. Everything executes 100% inside your browser, guaranteeing zero latency and complete privacy for API keys, user tokens, and confidential database schemas.
Options Explained
| Option | Description |
|---|---|
| Quantity | Number of UUIDs to generate at once (1 to 100). |
| UUID Version | Select RFC 4122 v4 or RFC 9562 v7 time-sortable identifiers. |
| Output Format | Format the output list as plain text, JSON, or comma-separated. |
| UPPERCASE letters | Outputs hexadecimal characters in uppercase format. |
| Include hyphens (-) | Standard 8-4-4-4-12 hyphenated string format. |
Frequently Asked Questions
What is the difference between UUID v4 and UUID v7?
UUID v4 is entirely pseudo-random. UUID v7 combines a 48-bit Unix millisecond timestamp with random bits, making it naturally time-sortable in database indexes.
Are the generated UUIDs cryptographically secure?
Yes. They are generated using the browser's native `crypto.getRandomValues()` API.
Can I generate UUIDs without hyphens?
Yes. Uncheck 'Include hyphens (-)' in the options panel to produce 32-character continuous hex strings.
Can I export UUIDs directly as a JSON array?
Yes. Select 'JSON Array' in the Output Format option.
Are generated UUIDs stored or sent to a server?
No. UUID generation runs 100% locally in your browser memory.