secure uuid/guid generator
Generate version 4 UUIDs (GUIDs) individually or in bulk for your databases and APIs. Fast, reliable, and cryptographically random unique IDs for developers.
Generate up to 50 Version 4 UUIDs (RFC 4122) at once.
Crypto-Secure: These UUIDs are generated using the browser's Native Crypto API (window.crypto), providing high-entropy, random values suitable for databases, API keys, and unique identifiers.
Getting Started in Seconds
Choose Quantity
Select how many unique UUIDs you need to generate at once.
Generate
Click the generate button to create new, cryptographically secure IDs.
Copy IDs
Copy the generated UUIDs for use in your database or application logic.
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Common
Questions
Have a different question about Secure UUID/GUID Generator? Feel free to reach out or explore our other documentation.
1Ever found yourself needing a 'universally unique' ID for a database entry, a transaction, or a session but wasn't sure how to make it truly random?
Imagine the chaos in a massive system if two different users were given the exact same ID number—it would be a data disaster. Our UUID Generator creates Version 4 'labels' that are so mathematically unique that the probability of a duplicate is practically zero. It’s the perfect way to ensure every single record in your system has its own distinct identity that can never be guessed or repeated by accident.
2Think of this as your private digital identity factory—what makes a 'Version 4' UUID so secure?
Imagine a master lock that has 340 undecillion combinations—that's the scale of randomness we're talking about with UUID v4. Unlike older versions that might use your computer's MAC address (which could be tracked), Version 4 is based on 'true' cryptographic randomness. Our tool uses your browser's secure 'crypto' engine to ensure every ID is born as an unpredictable string of characters, providing maximum security for your API keys and secure session tokens.
3Is it really safe to generate these critical IDs in an online tool?
Yes, and that's exactly why we built T00LZ to be 100% 'client-side.' We know that in a professional system, these IDs are the backbone of your data. Think of it as a private vault that's physically disconnected from the web—the IDs you generate never travel to our servers. They are born on your machine and stay under your control, ensuring that your system's 'master keys' remain strictly your business while you're building your future application.