QR Code Generator 二维码生成器

QR code will appear here 二维码将显示在这里

About QR Codes

QR (Quick Response) codes can store up to ~4,000 characters of text, URLs, WiFi credentials, contact cards (vCard), and more. They are widely used for mobile payments, event tickets, product packaging, and marketing. This tool generates QR codes entirely in your browser using the open-source qrcodejs library — no data is sent to any server.

Tips for Best Results

• Keep content under 500 characters for better scanning reliability.
• For WiFi: use format WIFI:T:WPA;S:NetworkName;P:Password;;
• For URLs: always include https:// prefix.
• Medium error correction (Level M) is used by default — balances capacity and resilience to damage.

关于二维码

QR（Quick Response）码最多可存储约 4000 个字符的文本、网址、WiFi 凭证、联系人卡片（vCard）等。广泛应用于移动支付、活动门票、产品包装和营销。本工具使用开源 qrcodejs 库，完全在浏览器本地生成二维码，数据不会发送到任何服务器。

使用建议

• 内容建议控制在 500 字符以内，扫描更稳定。
• WiFi 格式：WIFI:T:WPA;S:网络名称;P:密码;;
• 网址请带上 https:// 前缀。
• 默认使用中等纠错级别（Level M），在容量与抗损坏能力之间取得平衡。