A QR code, or Quick Response code, is a type of two-dimensional barcode that was first created in 1994 by a subsidiary of the Japanese company Denso Wave. QR codes are made up of black and white squares arranged on a grid and can be scanned by a smartphone camera or a dedicated QR code scanner. When scanned, the QR code can be used to quickly access information or perform an action, such as opening a website, downloading an app, or adding a contact to your phone. QR codes have become increasingly popular due to their ease of use, versatility, and ability to store more information than traditional barcodes. They are used in a variety of industries, from marketing and advertising to transportation and healthcare.Can I use the QR codes generated by this tool for commercial purposes?
Yes, you can use the QR codes generated by this tool for commercial purposes. This means that you are allowed to use the QR codes on products, advertisements, business cards, or any other commercial application without any restrictions. QRCode offers its service for free and does not impose any limitations on the use of the generated QR codes. However, you are responsible for complying with any relevant laws and regulations regarding the use of QR codes in your country or region.Do the created QR codes expire?
No, the QR codes created with QRCode are static and will work indefinitely. This means that once you generate a QR code, it will continue to work as long as the content it links to remains accessible.Is there a limit to how many times a QR code can be scanned?
There is no limit to how many times a QR code can be scanned. The QR code will work as many times as needed, as long as the content it links to remains accessible.Does QRCode save my data?
No, your data is not saved or reused in any way. QRCode only caches your QR code image files for 24 hours on their server to optimize performance. This means that after 24 hours, the QR code image will be deleted from their server.Why is my vCard QR code not showing the correct fields?
Not all QR code scanners follow the official vCard standard, which may result in mixed-up contact fields. It's recommended to try another QR code scanner app for better results. Alternatively, you can try generating the vCard QR code with a different tool.What can I do if my QR code is not working?
There are many reasons why a QR code may not work correctly. First, check the entered data for any typos or errors. Sometimes, QR codes that contain a lot of data, such as vCard codes, may need to be reduced in order for scanner apps to read them properly. Removing the logo and ensuring enough contrast between the background and foreground of the QR code can also help. For more information on why QR codes may not work, see this article.Does QRCode work in all browsers?
QRCode requires a modern HTML5-capable browser and officially supports Chrome, Firefox, Safari, Edge, and Internet Explorer 11. If you are using an older browser or a browser that is not officially supported, you may experience issues when using QRCode