UUID Generator
Generate random UUIDs (GUIDs) for database keys and identifiers.
UUID Generator
Generate a random UUID v4.
Guide
How to Use the UUID Generator
Get the most out of this free tool.
Generate universally unique identifiers (UUIDs/GUIDs) for your applications. Choose from UUID v4 (random) or v7 (time-ordered). Generate single or batch UUIDs. Essential for database primary keys, API identifiers, session tokens, and distributed systems.
Tips for Best Results
- Be specific with your inputs for more accurate results.
- Try different variations to compare outcomes.
- Use the copy button to save or share results.
Why This Tool Matters
This generator helps you save time, make data-driven decisions, and improve your business performance without expensive software or technical skills.
FAQ
UUID Generator FAQ
Common questions answered about this free tool.
What UUID versions are available?
UUID v4 (random) and UUID v7 (time-ordered with random component). v4 is most common, v7 offers better database index performance.
Are the UUIDs truly unique?
UUID v4 generates 2^122 random bits. The probability of collision is extremely low — effectively unique for practical purposes.
Are these developer tools free?
Yes, all our developer tools are completely free with no usage limits. Use them as much as you need for your development work.
Do you store my code or data?
No. All processing happens client-side in your browser. Your code and data never leave your device.
What is the maximum input size?
Most tools handle inputs up to several megabytes. For JSON formatter and validators, very large files (over 10MB) may cause slower performance.
Can I use these tools in my CI/CD pipeline?
These tools are designed for browser use. For programmatic access, we recommend using dedicated CLI tools or libraries.
Are the formatters configurable?
Yes, formatters typically include indentation settings (spaces vs tabs). JSON formatter supports different indentation levels.
What encoding standards are supported?
Base64 encoder/decoder supports standard Base64 with padding. URL encoder follows RFC 3986 encoding standards.
Can I validate JSON against a schema?
The JSON Validator checks syntax validity and structure. For JSON Schema validation, you would need specialized tools.
Are the CSS generators production-ready?
Yes, all generated CSS follows W3C standards and works in all modern browsers. Browser prefixes are included where needed.
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