Help & Knowledge Base
Frequently Asked Questions
Clear, straightforward answers about QR code creation, design, printing, vector export, and security.
Are the QR codes generated on FreeQRCodeOnline.io really free?
Yes! FreeQRCodeOnline.io is 100% free with no sign-up required, no credit card, and no hidden monthly subscriptions. All generated QR codes are static and last forever without scan limits.
Do QR codes created here have an expiration date?
No! Static QR codes embed your raw URL, Wi-Fi password, or contact card directly in the matrix barcode. They will work permanently without any expiration or scan limits.
Can I use generated QR codes for commercial projects?
Yes. You can print them on physical product packaging, menus, book covers, business cards, billboards, TV ads, and social media without paying any royalty or licensing fees.
How does error correction work when embedding custom logos?
Our engine applies Level H (30%) Reed-Solomon Error Correction. This mathematical redundancy ensures that even when a logo occupies up to 30% of the center surface, the remaining barcode geometry is easily decoded by all modern smartphone cameras.
What export format is recommended for billboards and print shops?
For physical printing, vector SVG or EPS is optimal. Vector files scale infinitely without pixel blur. For digital banners and websites, high-res PNG is ideal.
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