UUID Generator
Batch generate UUID/GUID with multiple formats and case options.
Usage
Features
UUID (Universally Unique Identifier) is a universal unique identifier used to uniquely identify information in computer systems. This tool uses the browser's native Crypto API (crypto.randomUUID) to generate RFC 4122-compliant UUID v4, with batch generation, multiple formats and case options.
Steps
Set the count (default 1, recommended 1-1000), choose a UUID format (Standard, No Hyphens, Braces, URN), check Uppercase if needed, and click "Generate UUID". Results will appear in the text box below, one per line. Click "Copy Result" to copy all.
Notes
Requires the browser's crypto.randomUUID API; unsupported environments will report a failure. The maximum count is 2000. UUID v4 is random-based; collisions are extremely unlikely but theoretically possible.