QR Code Generator
Create QR codes instantly from URLs, text or contact information. Download in PNG and SVG formats.
Disclaimer: This tool is for informational purposes only and does not constitute professional accounting, legal or financial advice. Results are estimates; consult a certified advisor for important decisions. Terms of Service.
What Is a QR Code and How Does It Work?
A QR code (Quick Response code) is a two-dimensional barcode developed in 1994 by the Japanese company Denso Wave. While classic striped barcodes carry data only horizontally, QR codes store information both horizontally and vertically, fitting far more data (URLs, text, contact info, Wi-Fi passwords) into a small square. A smartphone camera reads the black-and- white pattern and directs you to the content in seconds.
Types of QR Codes: Static and Dynamic
- Static QR code: The information is embedded directly and cannot be changed after creation. This tool generates static QR codes — ideal for a permanent URL or text, working indefinitely with no dependence on a third-party service.
- Dynamic QR code: Points to a redirect address whose target can be changed later. It offers scan analytics but usually depends on a paid service; if that service shuts down, the code stops working.
Common Uses for QR Codes
- Restaurant menus: Contactless access to a digital menu.
- Business cards: Add contact details with a single scan.
- Payments: Fast payment in banking and wallet apps.
- Event tickets: Quick verification at entry.
- Wi-Fi sharing: Connect without typing a password.
- Marketing: Direct people from posters, packaging and flyers to a website.
What Is the Error Correction Level?
QR codes include error correction so they remain readable even if partly damaged (scratched, smudged, partially covered). There are four levels: L (7%), M (15%), Q (25%) and H (30%). A higher level makes the code more robust but denser — preferred when adding a center logo or printing on a challenging surface.
Tips for a Good QR Code
- Sufficient contrast: A dark pattern on a light background works best; inverted colors can fail on some scanners.
- Quiet zone: Leave an empty margin around the code; codes flush to an edge may not scan.
- Adequate size: At least 2×2 cm in print; scale up for longer scanning distances.
- Test it: Always scan with different phones before publishing.
How to Use This Tool
- Enter the URL or text you want to encode.
- Customize the size and colors as needed.
- Check the preview and test it with a phone.
- Download the QR code as a high-resolution PNG.
Privacy
All QR code generation happens entirely in your browser. The data you enter is not sent to a server, stored, or shared with third parties. Generated codes are watermark-free and free for any use, including commercial.