UUID / GUID Generator — Free Online Tool
Generate 1 to 500 random UUIDs with uppercase, lowercase, and hyphens/no-hyphens options.
Interactive Tool Workspace Ready
Upload your file to begin processing locally on your device with WebAssembly security.
How to Use UUID / GUID Generator Online
- Step 1: Select UUID Version & Count — Choose RFC 4122 Version 4 (cryptographic random) or Version 1, and select batch quantity.
- Step 2: Cryptographic Entropy Generation — Uses browser `crypto.getRandomValues()` for collision-resistant, secure entropy.
- Step 3: Copy UUIDs to Clipboard — Copy single or bulk UUIDs in lowercase, uppercase, or without hyphens.
Why Use PDFly XO for UUID / GUID Generator?
- 100% Client-Side Privacy: All file processing is performed locally in your web browser. Your private documents are never uploaded to any remote server.
- Zero Wait Time: Local WebAssembly execution ensures near-instant document processing without file size upload latency.
- Free & Unlimited: Complete access with no subscriptions, watermarks, or hidden paywalls.
Frequently Asked Questions
- Is UUID / GUID Generator free and private to use?
- Yes, 100% free with no paywalls or watermarks. Supported file tools run processing locally in your browser memory for maximum speed and privacy.
- Do I need to install any software or create an account?
- No software installation or account registration is required. You can use UUID / GUID Generator instantly in any modern desktop or mobile web browser.
- How fast is processing with UUID / GUID Generator?
- Because calculations and file rendering occur directly on your local device CPU/GPU without network latency, operations complete almost instantaneously.
Related Developer Utilities
JSON Formatter & Beautifier
Format, validate, beautify, and minify JSON payloads with detailed syntax error pointers.
JSON Validator
Strict RFC 8259 JSON validation with line and column syntax error highlighting.
JSON Minifier
Compress JSON by stripping all indentation, newlines, and unnecessary whitespace.
Base64 Encoder / Decoder
Encode and decode plain text or files to and from Base64 string representations.
JWT Token Inspector
Decode JSON Web Tokens to inspect Header, Payload, and expiration status safely offline.
Unix Timestamp Converter
Convert between Unix epoch timestamps (seconds & milliseconds) and human readable dates.