什么是二维码生成与识别工具？
二维码（QR Code，Quick Response Code）是一种矩阵式条码，可存储文字、URL、数字等信息，能被智能手机摄像头快速扫描识别。本工具集二维码生成与识别于一体，满足多种使用场景。
本工具的功能：
- 生成二维码：输入文本或 URL 实时生成二维码，支持多种尺寸
- 文字说明：可在二维码下方添加文字说明，便于标注和区分
- 导出图片：一键导出包含文字说明的 PNG 图片
- 识别二维码：支持上传本地图片或输入远程图片网址进行识别
- 历史缓存：自动缓存最近生成的 10 个二维码，可快速重新打开
- 本地处理：所有计算在浏览器本地完成，数据不上传
常见用途：分享网址链接、Wi-Fi 密码、联系方式、电子名片、支付码等。
What is the QR Code Generator & Scanner?
A QR Code (Quick Response Code) is a matrix barcode that can store text, URLs, numbers, and more. It can be quickly scanned by smartphone cameras. This tool combines QR code generation and recognition in one place.
Features:
- Generate QR Code — Enter text or URL to generate QR codes in real-time with multiple sizes
- Text Label — Add a text description below the QR code for easy identification
- Export Image — One-click export of QR code with label as PNG image
- Scan QR Code — Recognize QR codes by uploading a local image or entering a remote image URL
- History Cache — Automatically caches the last 10 generated QR codes for quick access
- Local Processing — All computation is done locally in your browser, no data uploaded
Common uses: sharing URLs, Wi-Fi passwords, contact information, business cards, payment codes, etc.