Free Online UUID & GUID Generator — Bulk RFC 4122 v4 IDs
Overview: Cryptographically Secure Bulk UUID v4 Generator
Generate bulk cryptographically secure RFC 4122 compliant UUID v4 IDs with custom hyphens, braces, uppercase toggles, and UUID validator. All computations and data processing are executed 100% locally on your device using client-side WebAssembly, HTML5 Canvas, and modern Web APIs without uploading files to any external server.
Supported Formats
UUID & GUID Generator supports the following file formats:
- .txt — client-side processing support.
- .json — client-side processing support.
How to Use UUID & GUID Generator in Browser
- Select Quantity & Options: Choose how many UUIDs to generate (1 to 50) and select formatting options.
- Copy or Download: Copy individual UUIDs, copy all at once, or download as a text file.
Key Features & Privacy Protections
- 100% Client-Side Privacy: Zero cloud upload. Your documents, photos, and files never leave your local browser sandbox.
- Zero Installation: Runs instantly in Chrome, Safari, Firefox, Edge, Android, and iOS browsers.
- Free Forever: No sign-up, no subscriptions, no ads, and no file size limits.
Frequently Asked Questions (FAQ)
Are these UUIDs truly random and cryptographically secure?
Yes, they are generated using the Web Crypto API (crypto.randomUUID) according to RFC 4122 version 4 specifications.