📖 What is a QR Code?
A QR Code (Quick Response Code) is a type of two-dimensional barcode that can be scanned by any smartphone camera to instantly open a URL, display text, dial a phone number, send an email, or perform other actions.
QR codes were invented in Japan in 1994 and have become ubiquitous in India for UPI payments, restaurant menus, product packaging, business cards, and marketing materials.
📱 Uses of QR Codes
- Website URL — Share your website without typing a long URL
- UPI Payment — Link directly to your UPI payment page
- Business Card — Add contact details that can be scanned instantly
- Restaurant Menu — Link to your digital menu
- WiFi Password — Share WiFi credentials without typing
- App Download — Link directly to your app on Play Store or App Store
- Social Media Profile — Quick link to Instagram, Facebook, LinkedIn
🖨 Tips for Printing QR Codes
- Always test the QR code with multiple phones before printing
- Use minimum 2cm x 2cm size for print materials
- Ensure high contrast — dark code on white background
- Leave a white border (quiet zone) around the QR code
- For billboards and banners, use 10cm x 10cm or larger
❓ Frequently Asked Questions
Are QR codes free to use?
Yes. QR codes are an open standard and completely free to generate and use. Our QR code generator is also 100% free with no limits.
Do QR codes expire?
Static QR codes (like the ones generated here) never expire. They will always work as long as the URL or content they point to is still active.
What size should I download?
For digital use (websites, social media), 200px is fine. For print materials like business cards, use 300px or higher. For large banners, choose 400px or print at a larger physical size.
Can I generate a QR code for WhatsApp?
Yes! Select "Website URL" and enter: https://wa.me/91XXXXXXXXXX (replace with your phone number with country code). Anyone who scans it will be taken directly to a WhatsApp chat with you.