Nik Klemenc
QR Code & Web Technology Writer
Nik Klemenc writes about QR codes and web technology for Web QR Scan.
Articles by Nik Klemenc
- QR Code Not Scanning? 12 Practical Fixes
Fix a QR code that will not scan by checking blur, size, quiet zone, contrast, glare, damage, permissions, HTTPS, and browser support.
- How to Scan a QR Code from an Image or Screenshot
Scan a QR code from a saved image or screenshot online, with practical tips for cropping, clarity, privacy, and failed scans.
- How to Scan a QR Code on a Computer (Windows and Mac)
Scan QR codes on a Windows PC or Mac from screenshots, websites, PDFs, email, printed pages, or a webcam—without installing an app.
- How to Scan a Barcode from an Image Online
Upload a barcode image and decode UPC, EAN, Code 128, Code 39, Data Matrix, Aztec, or PDF417 locally in your browser.
- 10 Ways Businesses Are Using QR Codes in 2026
From contactless menus to inventory management, discover ten practical ways modern businesses are leveraging QR codes to improve operations and customer experience.
- How to Scan QR Codes Online Without Downloading an App
A complete guide to scanning QR codes directly in your browser — no app download, no installation, works on iPhone, Android, and PC.
- QR Codes vs Barcodes: Key Differences Explained
Understand the difference between QR codes and barcodes — how each works, what data they carry, and when to use which format.
- How to Create a QR Code That Scans Every Time
Practical tips for designing and generating QR codes that scan reliably across all devices, lighting conditions, and print sizes.
- QR Code Security: How to Spot and Avoid Malicious QR Codes
Learn how cybercriminals use fake QR codes to steal data and credentials, and what steps you can take to scan safely every time.
- The History and Future of QR Code Technology
From a Japanese car parts factory in 1994 to billions of daily scans worldwide — the complete story of how QR codes were invented, nearly forgotten, and became essential infrastructure.