Types of QR Codes
Universal QR Code Generator
A "universal" QR code generator is one that can encode multiple content types — URLs, contact cards, email, SMS, phone numbers, plain text — from a single tool, rather than being locked to generating just one kind of code.
There's no separate technical "universal" QR code standard — the term describes the generator's flexibility, not a different type of code. Under the hood, every one of those content types still produces a standard QR code; what changes is the format of the text encoded inside it (a `mailto:` link for email, a vCard block for a contact, and so on).
This site's generator supports URL, Contact/vCard, Email, SMS, Phone and Social presets from one tool, which covers the vast majority of what people mean by "universal."
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