Frequently Asked Questions
Find answers to common questions about Qraft, our free QR code generator.
What is a QR code?
A QR code (Quick Response code) is a type of two-dimensional barcode. By scanning it with a smartphone camera, you can perform various actions such as accessing URLs, displaying text, or connecting to Wi-Fi. It was developed by Denso Wave in 1994 and is now widely used around the world.
Is it really free?
Yes, all features are completely free. There are no usage limits, watermarks, or paid plan upsells. All QR code types and customization features are available at no cost.
Is my data stored anywhere?
No, your data is never stored. All QR code generation is processed entirely in your browser, with no data sent to any server. Sensitive information like Wi-Fi passwords and contact details never leaves your device.
Do generated QR codes expire?
No, generated QR codes do not expire. A QR code is simply your data converted into an image, so it remains scannable as long as the image file exists. However, if a QR code contains a URL, it will stop working if the linked page is removed.
What size should a QR code be?
It depends on the use case. As a general guideline, use at least 2cm × 2cm for business cards and 3cm × 3cm or larger for posters and flyers. The greater the scanning distance, the larger the QR code needs to be. This tool lets you adjust the size from 200px to 600px.
Can I add a logo and still scan it?
QR codes have built-in error correction, so they can still be scanned with a logo overlaid within a certain size range. However, if the logo is too large, scanning may fail. This tool displays a warning when the logo size may affect scannability.
Should I download PNG or SVG?
Choose based on your use case. PNG is ideal for sharing on websites and social media. SVG is a vector format that maintains quality at any size, making it perfect for print materials like business cards, posters, and brochures.
Can I use it on my smartphone?
Yes, you can use it directly from your smartphone browser. The tool features a responsive design that adapts to your screen size. No app installation is required.
How do I use the Wi-Fi QR code?
Select the Wi-Fi tab, enter your network name (SSID), password, and encryption type, then generate the QR code. When someone scans it with their smartphone camera, they can connect to your Wi-Fi without manually entering the password. Great for cafes and office guests.
Can I use generated QR codes commercially?
Yes, generated QR codes can be used freely for both commercial and non-commercial purposes. Use them on business cards, flyers, posters, websites, product packaging, and more.