QR Code Generator
Generate custom QR codes instantly. Supports URLs, text, WiFi, email, and more.
How QR Codes Work
QR (Quick Response) codes store data in a two-dimensional barcode that can be scanned by any smartphone camera. They were invented in 1994 by Denso Wave for tracking automotive parts, but are now used everywhere — from restaurant menus to payment systems.
Our generator creates QR codes entirely in your browser. No data is sent to any server, so your information stays private. The generated codes follow the ISO/IEC 18004 standard and include error correction, meaning they can still be read even if partially damaged. For other everyday utilities, check out our Online Calculator.
Frequently Asked Questions
Are the QR codes free to use?
Yes, completely free with no watermarks or limits. The QR codes are generated in your browser and you can use them for any purpose — personal or commercial.
Do the QR codes expire?
No. QR codes generated here are static — the data is encoded directly in the image. They never expire and will work forever as long as the linked content (like a URL) remains active.
What size should I use for printing?
For most print uses, 300px or larger works well. The minimum scannable size is about 2cm x 2cm (roughly 0.8 inches). For billboards or large displays, use the largest size option to ensure quality.
Can I customize the colors?
Yes! You can change both the foreground and background colors. Just make sure there is enough contrast between the two colors for reliable scanning. Dark foreground on light background works best.