UUID Generator
Generate unique identifiers in various formats with advanced customization. The best UUID generator tool for developers.
UUID Generator produces standards‑compliant identifiers for prototypes, migrations, and production systems. Generate v1/v3/v4/v5 with formats tailored to your storage or wire protocols.
Key features
- Generate UUID v4 (random)
- Generate UUID v1 (timestamp-based)
- Generate UUID v3/v5 (namespace-based)
- Multiple output formats (standard, compact, base64)
- Copy to clipboard functionality
- Real-time generation
- Format validation
- Help panel with examples and shortcuts
How it works
Values are created with cryptographically secure randomness (v4) or deterministic hashing (v3/v5) using well‑known namespaces. Premium adds bulk generation, history, and namespace management.
Step-by-step usage
- Select version (v1/v3/v4/v5) and desired output format.
- Provide name and namespace for v3/v5 if applicable.
- Copy results or (premium) generate in bulk and export.
Examples
Create a v4 ID for a new record
crypto.randomUUID() // e.g. 3f3c0f35-...Deterministic IDs with v5
Use a namespace and name (e.g., DNS + domain) to generate the same ID across environments.
(Premium) Generate 500 IDs
Bulk generate and export to CSV for a load test fixture.
Security & privacy
Where applicable, processing runs locally in your browser. Inputs are not logged or sent to external services. Premium features inside the app use Supabase Auth to protect access. For sensitive work, prefer local files and avoid sharing secrets. Outputs include copy and download actions to minimize manual transcription errors.
Accessibility
The tool supports keyboard navigation and screen readers with ARIA labels and descriptive messages. Focus order is logical, and error messages use human‑readable language. These docs maintain proper heading hierarchy and color contrast, and the app version includes skip links and live regions where appropriate.
Limitations & disclaimers
Some advanced capabilities are available only in the DevToolsHub app with a premium plan. The static documentation does not execute code or store inputs. Where behaviors differ across runtimes (browsers, servers, language engines), treat outputs as representative and verify against your production stack when correctness is critical.
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