QR Code Basics

Every QR Code contains more than a URL. The version determines data capacity, the format type determines where it can be printed, and the error correction level determines whether it survives a scratch, a smudge, or a torn poster. Most businesses deploy QR Codes without understanding any of this, and pay for it with dead codes in the field and no visibility into what's happening. This guide explains the technology, the decisions, and the governance principles that separate QR Codes that work from ones that quietly fail.

Do QR Codes expire once printed? Static codes are permanent. Dynamic codes expire when plans lapse or scan limits hit. Learn how to prevent qr code expiry and create qr codes that last.

Do you have a QR Code image but are confused about how to scan it? Find out how you can do this on iPhones and Android in this article.

Uniqode’s QR Code generator allows you to easily create, customize, and download QR Codes in various formats such as JPG, PNG, EPS, and SVG. In five simple steps, you can select the QR Code type, add a link or file, customize it with logo and colors, and download it in your preferred format.

Learn how to easily create QR codes for various file types on your iPhone using Uniqode’s dynamic QR Code generator. Overcoming limitations of Apple’s Shortcuts app, Uniqode offers extensive customization, editability, and scan tracking for a seamless experience.

Compare the 11 best QR code scanner apps of 2026 for Android and iOS. Find free and secure QR code reader apps with fast scanning, top ratings, and advanced features.

Scan QR codes on iPhone using the Camera app, Control Center, or from a screenshot and camera roll. Works on iPhone 6 through iPhone 16. Step-by-step instructions + troubleshooting fixes. Includes troubleshooting and safety tips.

Learn how to scan QR Codes on Android phones in 2 simple steps! Discover how to scan from existing images & tips for older Android 8 devices of all brands.

Both AR and QR Codes can create a huge impact on your business. Understand the difference between them, find out how you can create an augmented reality QR Code, and how you can use QR Codes to deliver AR experiences.

An in-house project in the 1990s that exploded to global adoption by the mid-2000s, followed by ubiquity since 2020—this is the story of QR Codes.

Learn how to link a PDF to QR Code in 5 easy steps. Share catalogues, brochures, eBooks and much more with your audience.

Automate QR Code redirection with Smart Rules. One dynamic QR Code, multiple destinations based on different conditions. Personalize experiences for each user based on time, location, device, and more.