QR Code Generator
Create custom QR codes instantly for URLs, WiFi, contacts, email, phone, and more. Download as PNG or SVG.
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About QR Codes
What is a QR Code?
A QR (Quick Response) code is a two-dimensional barcode that can store information like URLs, text, contact details, and more. First invented in 1994 by Denso Wave in Japan, QR codes are now used worldwide for everything from payments to marketing.
How Do QR Codes Work?
QR codes encode data in a grid of black and white squares. When scanned by a camera or QR reader app, the pattern is decoded back into the original information. Modern smartphones can scan QR codes directly from the camera app without any additional software.
What is Error Correction?
QR codes include error correction data that allows them to be read even if partially damaged. Low (L) recovers 7% of data, Medium (M) 15%, Quartile (Q) 25%, and High (H) 30%. Higher error correction makes the code denser but more resilient.
Best Practices for QR Codes
Use high contrast colours (dark foreground, light background). Ensure the QR code is large enough to scan easily — at least 2cm × 2cm for print. Always test your QR code before distributing. Use URL shorteners for long URLs to keep the code simple.
Frequently Asked Questions
Is this QR code generator free?
Yes, completely free with no limits. Generate as many QR codes as you need. No sign-up required. All QR codes are created in your browser — nothing is stored on our servers.
Do the QR codes expire?
No! QR codes generated here are static and never expire. They will work forever as long as the content they link to (like a website) remains available.
Can I use these QR codes commercially?
Absolutely. QR codes generated here are free for personal and commercial use. Use them on business cards, product packaging, marketing materials, menus, or anywhere else.
What size should I print my QR code?
For business cards, at least 2cm × 2cm. For posters and flyers, 3-5cm. For billboards, at least 25cm. The general rule is: the further the scanning distance, the larger the QR code needs to be.
Why should I use a WiFi QR code?
WiFi QR codes let guests connect to your network by simply scanning — no need to type long passwords. Perfect for homes, offices, cafes, hotels, and events. The password is encoded in the QR code.
Can I customise the colours?
Yes! Choose any foreground and background colour. Just ensure there's enough contrast between them for reliable scanning. Dark foreground on light background works best.