Developer Tools
UUID Generator
Generate cryptographically random UUID v4 strings for database IDs, session tokens, API keys, and unique identifiers. Generate up to 100 UUIDs at once in multiple formats — all generated locally in your browser.
1
Enter how many UUIDs you need (1 to 100)
2
Choose your output format (standard, uppercase, no dashes, or braces)
3
Click Generate
4
Copy individual UUIDs or all at once
5
Download as a .txt file if needed
🔑 UUID Generator
Generate random UUID v4 strings instantly. Bulk generate up to 100 UUIDs. Used for database IDs, session tokens, and unique identifiers.
Generate UUIDs
💡 Pro Tips & Best Practices
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UUID v4 is randomly generated and has a collision probability so low it is effectively impossible to duplicate.
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Use UUIDs instead of sequential IDs for database records that should not be guessable.
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The standard UUID format is 8-4-4-4-12 hexadecimal characters separated by hyphens.
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For URLs and slugs, the no-dashes format is cleaner and easier to handle in code.
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Many databases (PostgreSQL, MySQL, MongoDB) have native UUID data types — use them.
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Store UUIDs as binary (16 bytes) in databases for better performance than varchar.
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UUIDs are safe to expose in URLs — they reveal no information about record counts or order.