Generators & Security Scratchpads
Cryptographically secure passphrases, UUID v4 bulk builders, customizable QR codes, and meta social tags.
UUID / GUID v4 Generator
Bulk generation of RFC 4122-compliant unique identifiers
RFC4122 UUID v4 Generator
Generate cryptographically secure 128-bit Universally Unique Identifiers.
Mathematical Formula & Engineering Rules
Generates 128-bit random values, setting bits 48-51 to 0100 (Version 4) and bits 64-65 to 10 (Variant 1).
Worked Engineering Example
Format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx where y is 8, 9, A, or B.
Frequently Asked Questions
Q1:
Explore Sibling Calculators
QR Code Generator
Custom URL and text QR code generator with SVG/PNG download
Password Generator
Cryptographic entropy, character pool customization, and memorable passphrases
Meta Tag Generator
HTML <head> tags and Open Graph / Twitter card snippets with real-time preview
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