QR Code Generator
Generate QR codes and barcodes from text or URLs. Customize size, color, and download as PNG. Free online QR code generator.
Barcode Generator
Frequently Asked Questions
What is a QR code?
A QR (Quick Response) code is a 2D barcode that stores information readable by smartphone cameras. It can encode URLs, text, contact info, Wi-Fi credentials, and more. QR codes were invented in 1994 for automotive manufacturing but are now ubiquitous in marketing, payments, and ticketing.
What is error correction level?
QR codes have built-in error correction (Reed-Solomon coding). Higher levels allow the code to be read even if partially damaged or obscured. Low (7% recovery) is smallest, High (30%) is largest but most robust. Medium (15%) is the default and works for most use cases.
Can I customize the QR code colors?
Yes! You can set custom foreground and background colors. For best scannability, use dark colors on light backgrounds with high contrast. Avoid inverting colors (light on dark) as not all scanners support it. The minimum recommended contrast ratio is 4:1.
What's the maximum data capacity?
A QR code can hold up to 2,953 bytes of data (about 4,296 alphanumeric characters or 7,089 numeric characters). The actual capacity depends on the error correction level and data type. URLs are typically short enough to fit easily.
What barcode types are supported?
The barcode generator supports Code 128, Code 39, EAN-13, EAN-8, UPC-A, ITF-14, MSI, Pharmacode, and Codabar. Each type has specific use cases โ EAN/UPC for retail products, Code 128 for shipping, Code 39 for industrial applications.
Is this tool free?
Yes, completely free with no sign-up required. All QR code and barcode generation happens in your browser using JavaScript libraries.