QR Code Generator
Free online QR code generator. Create custom QR codes instantly for URLs, text, WiFi, vCard, email, and phone. 100% private, no data stored, high-resolution output.
How to Use QR Code Generator
Select QR Code Type
Choose the type of QR code you want to create: URL, Text, WiFi, vCard, Email, or Phone. Each type is optimized for its specific use case.
Enter Your Content
Fill in the required information for your chosen QR code type. For URLs, include the full https:// prefix for best results.
Customize Appearance
Personalize your QR code by adjusting size, colors, and error correction level. Add a logo for branding purposes.
Download and Share
Download your QR code in PNG or SVG format. PNG is best for web use, while SVG maintains quality at any size for print.
Frequently Asked Questions
A QR code (Quick Response code) is a two-dimensional barcode that can store various types of data. When scanned with a smartphone camera, it instantly directs users to websites, displays text, connects to WiFi networks, or performs other actions.
Yes, completely free! Our QR code generator is 100% free with no hidden fees, no registration required, and no watermarks on your QR codes.
Absolutely safe. All QR code generation happens entirely in your browser using JavaScript. Your data never leaves your device or gets sent to any server.
Yes! You can upload a logo to be placed in the center of your QR code. For best results:
- Use a square logo with clear edges
- Set error correction to High (30%) when using a logo
- Keep the logo size under 30% of the QR code area
Error correction determines how much redundancy is built into the QR code:
- Low (7%): Maximum data capacity, minimal damage tolerance
- Medium (15%): Balanced option for most use cases
- Quartile (25%): Good for adding logos
- High (30%): Best for adding logos or harsh environments
How QR Codes Work
QR codes (Quick Response codes) are two-dimensional barcodes that can store various types of data. Unlike traditional barcodes that only store numbers, QR codes can encode text, URLs, contact information, and more.
QR Code Structure
A QR code consists of black squares arranged in a square grid on a white background. The pattern includes:
- Finder patterns: Three large squares in the corners that help scanners locate the code
- Timing patterns: Alternating black and white modules that help scanners determine the size
- Alignment patterns: Help correct any distortion
- Data area: The actual encoded information
Error Correction
QR codes use Reed-Solomon error correction, which allows the code to be read even if partially damaged or obscured. Higher error correction levels mean more redundancy but better damage tolerance.
Scanning Process
When you scan a QR code with your smartphone:
- The camera captures the image
- The app detects the finder patterns
- It decodes the data using error correction
- The appropriate action is triggered (open URL, copy text, etc.)
QR Code Best Practices
Test Before Printing
Always test your QR code with multiple devices before printing. Ensure it scans quickly from various angles and distances.
Size Matters
For print, QR codes should be at least 2x2 cm (0.8x0.8 inches). Larger codes scan more reliably from greater distances.
High Contrast
Use dark foreground on light background for best results. Avoid similar colors that reduce scanning reliability.
Use HTTPS URLs
Always use secure HTTPS URLs. Many phones warn users when opening non-secure HTTP links from QR codes.
About QR Code Generator
Free online QR code generator. Create custom QR codes instantly for URLs, text, WiFi, vCard, email, and phone. 100% private, no data stored, high-resolution output.