QR Code Generator

A QR (Quick Response) code is a two-dimensional barcode that can store various types of information including URLs, text, contact details, WiFi credentials, and more. When scanned with a smartphone camera or QR reader app, it instantly displays or acts on the encoded information. QR codes were invented in 1994 by Denso Wave for tracking automotive parts, but have since become widely used for consumer applications.

Yes, absolutely! All QR codes generated on our platform are completely free to use for both personal and commercial purposes. There are no hidden fees, subscriptions, or watermarks. You can use them on business cards, flyers, websites, products, or anywhere else you need.

No, QR codes generated here are static and never expire. They contain the actual data (like a URL or contact info) encoded directly in the pattern. As long as the content they link to remains active (like a website), the QR codes will continue to work indefinitely. Unlike some services that use dynamic QR codes with tracking, our static QR codes have no expiration date.

The minimum recommended size depends on how far away the scanner will be:

• Business cards: At least 2cm × 2cm (0.8 inches)
• Flyers/Brochures: At least 3cm × 3cm (1.2 inches)
• Posters: At least 5cm × 5cm (2 inches)
• Billboards: Calculate based on viewing distance (1:10 ratio - 1cm QR for every 10cm distance)

Our generator allows sizes from 128px to 1024px. For print materials, use higher resolutions (512px or above) and export as SVG for infinite scalability.

Error correction allows QR codes to be read even if partially damaged, dirty, or obscured. There are four levels:

• Level L (Low): ~7% damage recovery - Best for clean, digital displays
• Level M (Medium): ~15% damage recovery - Good balance, recommended for most uses
• Level Q (Quartile): ~25% damage recovery - Good for printed materials
• Level H (High): ~30% damage recovery - Best for harsh environments or if adding a logo

Higher error correction creates denser (more complex) QR codes. If you plan to add a logo to your QR code, use Level H.

While our basic generator doesn't have a built-in logo feature, you can manually add a small logo to the center of your QR code using image editing software. Make sure to:

• Use Level H (High) error correction
• Keep the logo small (no more than 30% of the QR code area)
• Test the final QR code to ensure it still scans properly
• Use a simple logo with good contrast

If your QR code isn't scanning, check these common issues:

• Contrast: Ensure there's enough contrast between the QR code and background. Dark on light works best.
• Size: The QR code may be too small. Try enlarging it.
• Quiet Zone: Make sure there's white space (margin) around the QR code.
• Damage: Check for scratches, smudges, or fading on printed codes.
• Data Length: Very long URLs create dense codes that are harder to scan. Consider using a URL shortener.
• Inverted Colors: Some scanners struggle with light-on-dark QR codes.

Your privacy is our priority. All QR code generation happens entirely in your web browser using JavaScript. Your data (URLs, contacts, WiFi passwords, etc.) is never sent to our servers. We don't track, store, or have access to the content of your QR codes. The history feature stores recent QR codes only in your browser's local storage, which you can clear at any time.