Security & Crypto Tools
UUID Generator
Generate RFC 4122 UUIDs in versions 1, 4, and 7.
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What is UUID?
A UUID generator producing standard RFC 4122 identifiers: random v4, timestamped v1, and time-ordered v7 for database keys.
How it works
v4 uses crypto.randomUUID; v1 and v7 derive from the current timestamp plus crypto-safe random bits, formatted per the RFC.
- Enter your input. Type or paste your input into the field above — the tool responds instantly.
- Review the result. Output updates live as you type. Everything runs entirely in your browser.
- Copy or download. Use the Copy button to grab the result, or Download to save it as a file.
Examples
Generating identifiers
Generate one or many UUIDs for database keys, order IDs, or client tokens — v4 (random) by default, v1 and v7 available.
Common mistakes
UUID versions matter
v1 leaks time and MAC info; v4 is random; v7 is time-ordered. Pick per use case — the tool explains each.
Frequently asked questions
Is v4 truly random?
It uses the browser's cryptographically secure random source.
Can I generate a batch?
Yes — set a count and get newline-separated UUIDs.