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二维码扫描

从上传的图片中解码二维码。

文件

About this tool

从图片文件或摄像头解码二维码,在打开链接前先查看内容。无需上传,二维码照片始终留在你的设备上。

Why use it

  • 显示二维码的真实目标地址,便于及早发现钓鱼链接。
  • 可读取截图、照片和下载图片中的码。
  • 即时显示结果,一键复制解码文本。

Common use cases

  • 在手机上打开前,先确认海报上的码指向哪里。
  • 找回之前生成但未保存的二维码内容。
  • 从访客 Wi-Fi 码中提取连接信息。

Tips

  • 清晰、光线充足的照片比模糊裁剪更容易成功解码。
  • 若失败,可尝试拉正图像,使方块保持水平。
使用方法
  1. 选择包含二维码的图片。
  2. 自动解码。
  3. 在下方查看结果。
常见问题
How do I scan a QR code from an image?
Drop a photo or screenshot of the code and the contents are decoded instantly in your browser.
Is the image sent to a server?
No. Decoding happens locally with JavaScript, so the picture of your code stays on your device.
Can I check a link before opening it?
Yes. The decoded text is shown first so you can review a URL before deciding to trust it.
What if the code will not scan?
Use a sharper, well-lit image with the whole code visible and a little white margin around it.
Does it read Wi-Fi and contact codes?
Yes. The raw payload is shown, including Wi-Fi, vCard, email and phone formats.
Can I use my camera?
If your browser allows camera access you can scan live; otherwise upload an image of the code.