UUID / GUID Generator (v4)
Generate cryptographically secure random UUID v4 identifiers in bulk with uppercase, lowercase, and hyphen options.
100% Local Processing: All calculations and conversions run entirely inside your browser. No private data is ever uploaded or recorded.
Generated UUIDs
How to Use UUID / GUID Generator (v4)
1
Enter Your Input
Paste, upload, or type your input directly into the editor or controls above.
2
Instant Processing
Computed 100% locally in your browser with fast execution and complete privacy guarantee.
3
Copy or Download
Quickly copy the processed output to your clipboard or download files with one click.
Technical Specifications & Standards
Architecture Client-Side Web Crypto / V8
Data Privacy 100% In-Browser (Zero Transfer)
Compliance W3C / RFC Standards
Availability Free Forever (Client-Side)
Frequently Asked Questions
Are these UUIDs cryptographically random?
Yes, they use the Web Crypto API crypto.randomUUID() for CSPRNG randomness.