Free QR Code Generator
Generate QR codes for URLs, WiFi, vCards, text, and email. Customize colors, download PNG or SVG — no sign-up needed.
Loại mã QR
Ví dụ: https://ngheo24h.vn
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FAQ
What is a QR code?
A QR Code (Quick Response Code) is a 2D barcode that stores information as a matrix of black and white squares. Smartphones can read QR codes with their camera and automatically open URLs, connect to WiFi, save contacts, or display text.
What file formats can I download?
PNG (raster image, great for web and standard printing) and SVG (vector, stays sharp at any size — ideal for large-format printing like banners and signs).
What types of QR codes can I create?
URL (website link), WiFi (scan to connect instantly), vCard (digital business card), free text, and email address.
Do the QR codes expire?
No — static QR codes have no expiration date and work without an internet connection. All data is encoded directly in the image.