二维码扫描仪
使用相机扫描二维码或解码上传的图像。显示链接以供审阅，并且永远不会自动打开。
测试接口
按“开始”后，您的浏览器可能会请求许可。拖放
粘贴包含 QR 码的文本或图像。
如何使用这个工具
- Click Start camera and point the camera at a QR code, or drag an image into the upload area.
- Keep the code inside the frame until a result appears.
- Review the decoded text. For links, check the hostname before choosing Open link.
- Copy the result if needed and stop the camera when finished.
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技术说明
The scanner uses the browser BarcodeDetector API when available and falls back to a bundled QR decoding library for uploaded images. Camera frames are processed in the page and never transmitted.
QR decoding is not a guarantee of safety. A QR code can hide a shortened or deceptive URL. Always inspect the hostname and be cautious with requests for passwords or payments.
故障排除
Camera does not detect the code
Improve lighting, hold the camera steady, and fill more of the frame with the code. Avoid reflections and extreme angles.
Uploaded image is not decoded
Use a sharp, high-contrast image and crop out unrelated content. Very large images may be downscaled by the decoder.
Link preview is missing
Only http and https URLs are recognized as links. Other text is shown as plain content.
BarcodeDetector is unsupported
The camera scanner needs a browser with BarcodeDetector or a compatible fallback. Image upload remains available where the fallback decoder is supported.
相关工具
常见问题
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