Tạo mã QR
Trình tạo mã QR miễn phí. Tạo mã QR cho văn bản, URL hoặc thông tin liên hệ với màu sắc, kích thước, lề và mức sửa lỗi tùy chỉnh. Tải xuống dưới dạng PNG.
Runs in your browserUpdated Apr 26, 2026
Settings
Result
QR code preview will appear here.
Các câu hỏi thường gặp
›Is the QR code an image I can download?
Yes — download as PNG. You control the size, foreground/background colors, and error-correction level.
›Is there a character limit?
QR codes hold up to ~4,000 alphanumeric characters depending on error-correction level. Shorter inputs scan more reliably.
›What error-correction level should I pick?
L (7%) for short URLs in clean conditions. H (30%) for printed codes that might get damaged or have a logo overlaid.
›Can I add a logo?
Currently we generate clean codes. Download the PNG and overlay a logo with any image editor — error correction H tolerates that.
›Is the generator free?
Yes — fully free, no signup, no usage limits.