QR Code Generator Online Free: Custom Colors, PNG / SVG

A QR code is a 2D bitmap encoding text. The three large squares in corners are position markers (so the camera knows orientation). The small square in the bottom-right area is the alignment marker. The dotted edges are timing patterns. The middle is your data plus error-correction redundancy. Larger payloads → denser grids → smaller modules → harder to scan in poor lighting. Keep payloads short for sharpness.

L (Low): ~7% damage tolerance, smallest QR. Clean digital use. M (Medium): ~15%, the default, good balance. Q (Quartile): ~25%, useful for printed material. H (High): ~30%, for tough conditions, wet beer mats, partially scratched stickers, logos overlaid in the centre. Higher levels make the QR denser (more redundancy data), so the code becomes physically larger or harder to scan from a distance.

URL: just put the full URL with https://. WiFi auto-connect: WIFI:T:WPA;S:NetworkName;P:password;;, phone joins automatically when scanned. vCard: contact card so people add to phone book in one tap. Email with subject + body: mailto:hello@example.com?subject=Hi&body=Body%20text. Phone: tel:+34123456789, opens dialer pre-filled. SMS: sms:+34123456789?body=Hello.

Many 'free QR generators' actually create QRs that point to a redirector URL (qrco.de/xyz → tracks the scan, sells data, then forwards to your URL). Useful if you want analytics, but a privacy compromise: every scan gets logged, and if their service goes down, your QR breaks. Our tool generates direct QR codes, they point exactly where you say, with no third party in between. Your URL, no tracking.