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QR Code Basics

Learn QR code fundamentals — what they are, how they work, types, and essential knowledge for beginners and pros alike.

12 guides
A desktop QR code reader decoding a QR code from an uploaded image, with the decoded link, Wi-Fi and contact result shown beside it
QR Code Basics

QR Code Reader: How to Read Any QR Code Online

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Chart comparing QR code data capacity limits for numeric, alphanumeric, and binary content
QR Code Basics

How Much Data Can a QR Code Store? Capacity Explained

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Printed QR code beside an editing cursor, showing when you can and can't edit a QR code
QR Code Basics

Can You Edit a QR Code After Creating It? Here's What You Need to Know

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Phone saving contact details after scanning a vCard QR code — illustrating vcard qr code
QR Code Basics

vCard QR Codes: A Better Way to Share Contact Details

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Smartphone connecting to WiFi instantly by scanning a QR code — illustrating wifi qr code
QR Code Basics

WiFi QR Codes: How They Work and When to Use Them

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QR code staying scannable across passing years, answering whether QR codes expire
QR Code Basics

Do QR Codes Expire? Everything You Need to Know

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iPhone, Android, and laptop each showing how to scan a QR code from one poster
QR Code Basics

How to Scan a QR Code on iPhone, Android, and Desktop

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QR code vs barcode face-off with capacity and scanner specs for each
QR Code Basics

QR Code vs Barcode: What's the Difference?

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Browser address bar turning into a URL QR code that a phone scans to open the website
QR Code Basics

URL QR Codes: What They Are and When to Use Them

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Hub diagram of nine types of QR codes from URL and WiFi to calendar and location
QR Code Basics

QR Code Types Explained: URL, WiFi, vCard, Email, SMS, and More

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Static vs dynamic QR code face-off, one locked and permanent, one cloud-based and editable
QR Code Basics

Static vs Dynamic QR Codes: Which One Should You Use?

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Large QR code under a magnifying glass with data-type icons, introducing what a QR code is
QR Code Basics

What Is a QR Code? The Complete Beginner's Guide

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