Generating & exporting
Do I need to sign up or pay?
No. QRCodeCat runs entirely in your browser—generate unlimited codes without accounts or watermarks.
Which export formats are available?
PNG and SVG are supported on every generator. Some pages also output JPG or PDF—see the download buttons after generating.
Can I add my logo?
Yes via the customizer panel. Keep logos away from finder patterns and use high error correction for print.
Can I use QR codes for commercial purposes?
Absolutely! All QR codes you generate can be used for any commercial or personal purpose without restrictions or attribution requirements.
Do QR codes expire?
No. Static QR codes generated by QRCodeCat never expire. The code itself is permanent, but make sure the linked URL or content remains accessible.
Printing & sizing
Minimum size for business cards?
Print at least 20 mm (0.8 in) wide at 300 DPI with error correction level M.
Outdoor posters or billboards?
Make the QR at least 4× the scanning distance, use high contrast, and error correction H. Test from real distance.
PNG or SVG for print?
PNG is fine for small prints; use SVG for anything that might scale. See the PNG vs SVG guide for details.
What resolution should I use for printing?
For professional printing, use at least 300 DPI. Export as SVG for unlimited scaling without quality loss, or PNG at 1200x1200px or higher for large format prints.
Privacy & data
Do you store my Wi-Fi or vCard data?
No. All content stays in your browser session and exports directly to your device.
Can I track scans?
Use your own analytics (UTM parameters, short URLs, SMS gateway). QRCodeCat does not inject tracking.
Is my data secure?
Yes. All QR code generation happens locally in your browser. No data is sent to our servers, ensuring complete privacy and security.
Bulk generation & advanced features
How do I generate multiple QR codes at once?
Use the Bulk Generator to upload a CSV file with your data. You can generate hundreds of QR codes in seconds and download them all as a ZIP file.
What format should my CSV file be?
Your CSV should have columns for name, content, and type. Download our CSV template from the Bulk Generator page for the correct format.
Can I customize colors for each QR code in bulk generation?
Currently, bulk generation applies the same style to all codes. For individual customization, generate codes separately using the standard generators.
Mobile & compatibility
Do I need a special app to scan QR codes?
No. Most modern smartphones (iPhone and Android) have built-in QR code scanning in the camera app. Just point your camera at the code.
Can I generate QR codes on my phone?
Yes! QRCodeCat is fully mobile-responsive. You can generate, customize, and download QR codes directly from your smartphone or tablet.
Why won't my QR code scan?
Common issues: insufficient contrast, too small size, damaged or blurry print, poor lighting, or too much customization. Ensure high contrast, adequate size (minimum 2x2 cm), and test before mass printing.