Identifiers
UUID Workbench
Generate UUID v4 or v7 values in bulk, then validate pasted UUIDs locally.
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Use UUIDs Wisely
UUIDs help software keep track of things. They aren’t meant to protect secrets, nor are they passwords.
UUID v4
Use v4 when you want a random ID that does not show when it was made.
UUID v7
Use v7 when sorted lists matter. It keeps newer IDs naturally ordered.
Best Practice
Think of a UUID as a unique serial number. It helps software tell one thing apart from another, like users, files, or database records. It isn’t meant to keep anything secret. If a value must stay hidden, use a real token or strong password instead.
Common places
You will often see UUIDs used as boring but useful labels in systems like:
- Database records
- APIs
- Mobile apps
- Cloud services
- File storage
- Logs and trace IDs
- Shopping carts and orders
If the value unlocks access, treat it like a secret instead.
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