DNS name
A stable name for deterministic UUID v5 generation.
www.example.com
IdentifiersLocal-only
UUID Generator
Generate random UUID v4 and deterministic namespace UUID v5 values locally in your browser.
This tool runs locally in your browser. Your input is not uploaded.
No uploadsNo server logsNo runtime APIsBrowser-only transforms
Generated UUID
Run the tool to generate local output.
Options
Examples
Route identifier
A path-like value that can map to a stable namespace UUID.
/tools/json
How it works
- UUID v4 uses browser cryptographic randomness.
- UUID v5 hashes a namespace UUID and name with SHA-1 as defined by the UUID specification.
- Version and variant bits are set before the UUID string is rendered.
Limitations
- UUID v1 and v7 are not included in the initial scaffold.
- Generated values are not stored or synchronized across devices.
FAQ
Should I use UUID v4 or v5?
Use v4 for random identifiers and v5 when the same namespace and name should always produce the same UUID.
Are UUIDs stored by this site?
No. Values are generated locally and are not persisted by the app.
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