Free Tool · Client-Side Only

UUID
Generator.

Generate RFC 4122-compliant UUID v4, v1, and v7 identifiers. Bulk generation, multiple format options, and a UUID validator with version detection.

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Version

Count

Format

Standard (lowercase) Uppercase No dashes {Braces}

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Paste a UUID to validate

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UUID v4 — Random

122 bits of cryptographic randomness. No time or node info. Most commonly used for database IDs and session tokens.

UUID v1 — Time-based

Encodes current time + MAC address. Sortable by creation time but may leak MAC address — avoid for security-sensitive IDs.

UUID v7 — Time-ordered

New RFC 9562 standard. Unix timestamp prefix + random bits. Sortable and DB-index-friendly without leaking node info.

Security note

Never use sequential or predictable IDs for resources accessible via API — they enable BOLA/IDOR attacks. UUID v4 or v7 are safe choices.

AquilaX Platform

Detect BOLA & IDOR
vulnerabilities automatically.

AquilaX detects insecure ID patterns, predictable object references, and broken object-level authorization in your APIs.