GUID/UUID Generator
Generate unique identifiers with multiple format and encoding options
How It Works
1. Set Quantity
Choose how many GUIDs you need, from 1 to 1000.
2. Choose Format
Select your preferred format: hyphens, braces, uppercase, quotes, or commas.
3. Select Encoding
Apply Base64, RFC 7515, or URL encoding if needed.
4. Generate
Click generate and optionally enable auto-copy to clipboard.
Why Use Our GUID Generator?
Cryptographically Secure
Uses browser's crypto API for true random generation.
Multiple Formats
Support for various formats and encoding standards.
Bulk Generation
Generate up to 1000 GUIDs at once for efficiency.
Instant Copy
Auto-copy feature for quick workflow integration.
No Installation
Works directly in your browser, no downloads needed.
100% Free
Unlimited GUID generation at no cost.
Frequently Asked Questions
What is a GUID?
GUID (Globally Unique Identifier) is a 128-bit number used to identify information in computer systems. It's also known as UUID (Universally Unique Identifier).
Are GUIDs truly unique?
Yes, GUIDs are designed to be unique across all devices and time. The probability of generating duplicate GUIDs is extremely low (nearly impossible with cryptographic generation).
What is the difference between UUID and GUID?
UUID and GUID are essentially the same thing. UUID is the standard term defined by RFC 4122, while GUID is Microsoft's implementation. Both follow the same format and are interchangeable.
What are common uses for GUIDs?
GUIDs are commonly used as database primary keys, session identifiers, unique file names, API request tracking, distributed system identifiers, and ensuring uniqueness in various applications.
What is RFC 7515 encoding?
RFC 7515 is base64url encoding used in JSON Web Signatures (JWS) and JSON Web Tokens (JWT). It's URL-safe and removes padding characters for use in URLs and headers.
Can I use these GUIDs in production?
Yes, our generator uses the crypto.randomUUID() method which generates Version 4 UUIDs following RFC 4122. These are cryptographically secure and suitable for production use.