UUID Generator
Generate UUID v4, v1, and v7 with copy and download options.
What does UUID Generator do?
UUID Generator creates universally unique identifiers (UUIDs) in your browser. Choose between UUID v1 (time-based), v4 (random), and v7 (time-ordered) formats. Generate up to 100 UUIDs at once with copy and download options.
Use Cases
- •Generate unique IDs for database records
- •Create session tokens for web applications
- •Generate unique filenames for uploaded files
- •Create correlation IDs for distributed systems
- •Generate test data with unique identifiers
How to Use
- 1Select the UUID version (v1, v4, or v7)
- 2Choose how many UUIDs to generate (1-100)
- 3Optionally enable uppercase for the output
- 4Click "Generate" to create the UUIDs
- 5Copy individual UUIDs or download all at once
Frequently Asked Questions
What is the difference between UUID v1, v4, and v7?
UUID v1 is time-based and includes a timestamp. UUID v4 is randomly generated. UUID v7 is time-ordered, making it ideal for database primary keys as it sorts chronologically.
Are these UUIDs truly unique?
Yes. UUID v4 uses the cryptographic random number generator (crypto.getRandomValues) which provides sufficient randomness for uniqueness. The probability of collision is practically zero.
Is my data private?
Yes. All UUIDs are generated entirely in your browser using the Web Crypto API. No data is sent to any server.
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